OpenSearchCon Europe 2025: Full Schedule

In-person
30 April - 1 May 2025
Learn More and Register to Attend

The Sched app allows you to build your schedule but is not a substitute for your event registration. You must be registered for OpenSearchCon Europe 2025 to participate in the sessions. If you have not registered but would like to join us, please go to the event registration page to purchase a registration.

Please note: This schedule is automatically displayed in Central European Summer Time (UTC+02:00). To see the schedule in your preferred timezone, please select from the drop-down located at the bottom of the menu to the right.

IMPORTANT NOTE: Timing of sessions and room locations are subject to change.

08:00 CEST

Registration

Wednesday April 30, 2025 08:00 - 18:00 CEST

Atrium Foyer

Wednesday April 30, 2025 08:00 - 18:00 CEST
Atrium Foyer

Registration

10:00 CEST

Keynote Sessions To Be Announced

Wednesday April 30, 2025 10:00 - 11:00 CEST

Matterhorn

Wednesday April 30, 2025 10:00 - 11:00 CEST
Matterhorn

Keynote Sessions

11:00 CEST

Break

Wednesday April 30, 2025 11:00 - 11:15 CEST

Atrium Foyer

Wednesday April 30, 2025 11:00 - 11:15 CEST
Atrium Foyer

Breaks + Special Events

11:15 CEST

How To Start Contributing To OpenSearch Without Any Prior Knowledge on OpenSearch - Abdul Muneer Kolarkunnu, NetApp Pvt Ltd

Wednesday April 30, 2025 11:15 - 11:35 CEST

Zurich II

Abstract:

Contributing to an open-source project like OpenSearch can seem daunting, especially without prior knowledge of the product. In this presentation, I will share my personal journey of starting as a complete beginner and becoming an active contributor to OpenSearch.

Description:

Open-source contributions are a journey of growth, collaboration and innovation. I started contributing to OpenSearch about 8 months back. I will discuss the strategies and resources that helped me to overcome the initial learning curve, including understanding the codebase, finding beginner-friendly issues, and engaging with the community. I contributed to 3 different projects so far (OpenSearch core, Security and ml-commons). I will go through some of these PRs and explain how and why I chose these tasks. I will talk about different meetups like triage meetings, community meetings, code walkthrough sessions and conferences and what we can learn from these.

Key Takeaways:

Practical steps to begin contributing to OpenSearch.
Overcoming the learning curve and finding beginner-friendly issues.
Leveraging community support and resources for successful contributions.

Speakers

Abdul Muneer Kolarkunnu

Software Developer, NetApp Instaclustr

I am a passionate open-source developer actively contributing to OpenSearch, now mainly in to ml-commons. I contributed to OpenSearch core and Security projects too. I started contributing from May 2024 onwards. Also, I am an OpneJDK committer mainly worked on Core-libs, Client-libs... Read More →

Wednesday April 30, 2025 11:15 - 11:35 CEST
Zurich II

Security Education + Community Development

11:15 CEST

Dive Deep on OpenSearch’s Vector Search - Jon Handler & Yuye Zhu, Amazon Web Services

Wednesday April 30, 2025 11:15 - 11:55 CEST

Matterhorn

Search engines take in a query and return a set of results that best satisfy the need of the searcher. Words from a text box, user interface facets, and some user identity information have been the clues for good retrieval. Today, Large Language Models (LLMs) produce vectors with semantic information that augments or replaces lexical information for retrieving best results. OpenSearch's low-level APIs can connect with and use LLMs as part of an overall search solution. A full solution still requires some higher-level coding to take full advantage of these APIs. In this talk, we’ll cover some theory on similarity, and how and where vectors can help you retrieve better results. We’ll dive deep on opensearch-ml-quickstart (https://github.com/Jon-AtAWS/opensearch-ml-quickstart), an open-source example set for managing connections with OpenSearch, local models, and vector embeddings. We’ll walk through examples and code to help you get started quickly with OpenSearch’s vector capabilities: exact nearest-neighbor matching, dense vector embeddings, and sparse vectors. You’ll leave with a great tool in opensearch-ml-quickstart, along with the knowledge of how to apply it.

Speakers

Jon Handler

Director of Technology, Search Services, Amazon Web Services

Jon Handler is Director of Technology at Amazon Web Services based in Palo Alto, CA. Jon works with OpenSearch and Amazon OpenSearch Service, helping customers who have vector, search, and log analytics workloads that they want to move to the AWS Cloud. Prior to joining AWS, Jon’s... Read More →

Yuye Zhu

Machine Learning Engineer, Amazon

Yuye Zhu is a Machine Learning Engineer Engineer at OpenSearch, AWS. His interests include LLM, agent, RAG and information retrieval.

Wednesday April 30, 2025 11:15 - 11:55 CEST
Matterhorn

11:15 CEST

Unconference

Wednesday April 30, 2025 11:15 - 12:40 CEST

Zurich I

Wednesday April 30, 2025 11:15 - 12:40 CEST
Zurich I

Unconference

11:35 CEST

From Zero To Maintainer: How We Implement Generation of Code for 4 Clients (JS, Ruby, Python, Java) - Torekeldi Niyazbek, DEMETRA SYSTEMS

Wednesday April 30, 2025 11:35 - 11:55 CEST

Zurich II

As a Maintainer of the OpenSearch Specification Repository, I’d like to share how we addressed a major challenge in maintaining OpenSearch clients (Ruby, Python, Java, Node.js).

Every OpenSearch update required manual replication of changes across all clients, consuming countless hours since version 1.0. By version 2.18, it became clear we needed a scalable solution. Our team built a Specification Repository that centralizes all possible request and response schemas, enabling automated client code generation.

We use OpenAPI specifications and a custom testing framework to ensure consistency, minimize human error, and accelerate development. This approach eliminates repetitive work, improves reliability, and scales better with OpenSearch's growth.

I will demonstrate how the repository works, share code generation examples, and discuss its impact on reducing maintenance overhead while improving client reliability. Additional resources showcasing real-world applications will be provided.

This solution not only streamlines client updates but also sets a foundation for innovation in OpenSearch's ecosystem.

Speakers

Torekeldi Niyazbek

Maintainer in OpenSearch Specification Repository, DEMETRA SYSTEMS

I am a Lead Software Engineer at DEMETRA SYSTEMS in Kazakhstan, with over two years of experience in development and nearly two years in open source. I joined OpenSearch through the College Contribution Initiative (CCI), a collaboration between Amazon and the Ministry of Education... Read More →

Wednesday April 30, 2025 11:35 - 11:55 CEST
Zurich II

Security Education + Community Development

12:00 CEST

Building the Future of Search: Hybrid Approaches With Neural Sparse and Dense Vectors - Aditya Soni, Forrester & Seema Saharan, Autodesk

Wednesday April 30, 2025 12:00 - 12:40 CEST

Matterhorn

Forget the old search paradigms—AI is here to change everything! By blending sparse (traditional term-based) and dense (vectorized) search methods, OpenSearch creates a hybrid solution that optimizes search results, from precision to performance.

Learn how to implement hybrid search, combine neural embeddings from LLMs with traditional search techniques, and enhance scalability. This solution bridges the gap between legacy systems and AI-driven search, improving accuracy and relevance while scaling to enterprise-level needs. Transform how you search, analyze, and scale with OpenSearch.

Speakers

Aditya Soni

CNCF Ambassador, DevOps Engineer II, Forrester

Aditya Soni is a DevOps/SRE tech professional He worked with Product and Service based companies including Red Hat, Searce, and is currently positioned at Forrester Research as a DevOps Engineer II. He holds AWS, GCP, Azure, RedHat, and Kubernetes Certifications.He is a CNCF Ambassador... Read More →

Seema Saharan

Site Reliability Engineer, CNCF Ambassador, Autodesk

Meet Seema, the tech whiz at Autodesk. She's not just about fixing things – she loves sharing what she knows! Whether speaking at cool events like GitLab Commit, and GitHub Universe or breaking down tech on her YouTube channel, Seema makes the complicated stuff easy and fun. Join... Read More →

Wednesday April 30, 2025 12:00 - 12:40 CEST
Matterhorn

12:00 CEST

Real-Time Analytics UX: Designing OpenSearch Interfaces for Security and Observability Teams - Xenia Tupitsyna & Laura Pavlov, Amazon Web Services; Aparna Sundar, OpenSearch Project

Wednesday April 30, 2025 12:00 - 12:40 CEST

Zurich II

Join us to explore how user research drives technical innovation in OpenSearch. Discover how our UX team rebuilt OpenSearch Dashboards' information architecture by starting with comprehensive user personas of Security and SRE teams and optimized for the workflows of real-time operational analytics.
We'll share our research insights, persona frameworks, and the resulting information architecture that transformed our UI approach.
Key topics include:
How security and observability personas shaped our core design decisions
Creating an information hierarchy that supports real-time analysis workflows
Mapping common patterns between security analytics and observability use cases
Design patterns that emerged from our persona-driven approach
Future extensibility opportunities for the community
Whether you're contributing to OpenSearch or building analytics tools, you'll gain practical insights into designing interfaces that scale across diverse use cases. We'll share our learnings from the recent redesign of the information architecture and invite community feedback on our proposed framework.

Speakers

Xenia Tupitsyna

Senior UX Researcher, Senior UX Designer, UX Designer, AWS

Xenia is a UX designer at AWS OpenSearch Project since 2022. She is working on user experience across machine learning, alerting and Security Analytics solutions at OpenSearch.

Laura Pavlov

Senior UX Designer, Amazon Web Services

Laura Pavlov is a Senior UX Designer at the OpenSearch Project, where she leads the design of data exploration and visualization capabilities. Laura brings a balanced approach to her work, drawing from her cognitive research background at Columbia University, and her experience... Read More →

Aparna Sundar

Lead UX Researcher, OpenSearch Project

Aparna Sundar is a Senior Researcher at OpenSearch Project. She has decades of experience in the field of research and design. She actively publishes in cognitive science journals. Aparna gives talks in various domains including Technology, Psychology and Marketing.

Wednesday April 30, 2025 12:00 - 12:40 CEST
Zurich II

Security Education + Community Development

12:40 CEST

Lunch

Wednesday April 30, 2025 12:40 - 13:45 CEST

Mövenpick Restaurant

Wednesday April 30, 2025 12:40 - 13:45 CEST
Mövenpick Restaurant

Breaks + Special Events

13:45 CEST

Effortless Collaboration With OpenSearch Workspace : A Hands-On Demo - Abhay Baiju, Atlassian & Shambhavi Sarin, Salesforce

Wednesday April 30, 2025 13:45 - 14:25 CEST

Matterhorn

In a large organisation at scale, collaborating effectively on analytics and observability is a major challenge. Sharing the right set of permissions with the right stakeholders is a critical task. OpenSearch Workspace, a powerful new feature aims to make this collaboration much easier.

This session will dive into how OpenSearch Workspace can empower your team to efficiently share insights, visualise data and help drive faster decisions. We’ll go over the basics of a workspace, practical use cases, including shared dashboards and granular access control, and also have a hands-on demo of setting up a workspace.

Attendees can expect to leave with a deep understanding of:

- How OpenSearch Workspaces function and their role in the
ecosystem
- Configuring and optimising workspaces for diverse use cases.
- Setting the right level of access for workspaces
- Getting Workspace up and running in your team.

Whether you're an engineer or a data scientist, this session will leave you equipped to enhance collaboration in your organisation and get the most out of OpenSearch Workspace.

Speakers

Abhay Baiju

Software Engineer, Atlassian

I'm a software engineer who's really into creating sustainable and effective software. I find DevOps and backend technologies intriguing. My interest in these areas grew as I got hands-on experience with the concepts and applied them to different projects. I'm a passionate person... Read More →

Shambhavi Sarin

Member of Technical Staff, Salesforce

Shambhavi is an engineer at Salesforce working on building software and delivering end to end applications. Shambhavi has been living in Bangalore and has had various developer and operations roles throughout her career while staying active in the open-source developer community... Read More →

Wednesday April 30, 2025 13:45 - 14:25 CEST
Matterhorn

Analytics + Security + Observability

13:45 CEST

Building Intelligent Search Systems With Agentic RAG and OpenSearch - Vivek Gautam & Rushabh Lokhande, Amazon Web Services

Wednesday April 30, 2025 13:45 - 14:25 CEST

Zurich II

In today's rapidly evolving AI landscape, Agentic Retrieval-Augmented Generation (RAG) systems represent a significant leap forward in intelligent search capabilities. This presentation introduces how Agentic RAG enhances traditional RAG by incorporating autonomous agents that can both retrieve and act on information. We'll demonstrate a practical implementation using OpenSearch's vector database, showcasing how this combination enables agents to understand user queries, retrieve relevant information, and execute meaningful actions based on the context.

The presentation will focus on three key areas: the fundamental architecture of Agentic RAG, its integration with OpenSearch vector search capabilities, and practical scaling considerations for enterprise applications. Through demonstration steps, we'll show how this system handles real-world scenarios, highlighting the potential impact on business operations. We'll conclude with insights into deployment strategies and best practices for maintaining system performance at scale, providing attendees with actionable knowledge they can apply in their own organizations.

Speakers

Rushabh Lokhande

Sr. Data & ML Engineer (GenAI SME), Amazon Web Services (AWS)

Rushabh is a Senior Data & ML Engineer with specialization in data analytics and GenAI at AWS Professional Services. He works with enterprise customers building data products, analytics platforms, streaming, GenAI solutions, and search solutions on AWS. When not building and designing... Read More →

Vivek Gautam

Sr Data Architect, Professional Services, Amazon Web Services

Vivek Gautam is a Senior Data Architect with specialization in data analytics at AWS Professional Services. He works with enterprise customers building data products, analytics platforms, streaming, and search solutions on AWS. When not building and designing data products, Vivek... Read More →

Wednesday April 30, 2025 13:45 - 14:25 CEST
Zurich II

Operating OpenSearch

13:45 CEST

Unconference

Wednesday April 30, 2025 13:45 - 14:25 CEST

Zurich I

Wednesday April 30, 2025 13:45 - 14:25 CEST
Zurich I

Unconference

14:30 CEST

Enhancing Application Observability With OpenSearch and OpenTelemetry - Karsten Schnitter, SAP SE

Wednesday April 30, 2025 14:30 - 15:10 CEST

Matterhorn

How do you know whether your applications are running smoothly or struggling? OpenSearch can provide insights and analyze telemetry data of your applications. Modern observability revolves around three core signal types: logs, metrics, and traces. This talk demonstrates how to instrument your applications and collect these signals using OpenTelemetry, enabling comprehensive insights into application performance and health.
We explain how to map the data in a way to easily correlate logs, metrics, and traces. Building on these correlations we present how OpenSearch can be leveraged to generate advanced insights. Explore with us how far this correlated approach can exceed solutions focussing on just logs or traces.
We'll start by exploring how to process and index telemetry data with Data Prepper, making it ready for analysis, dashboarding, and alerting within OpenSearch.
You’ll learn effective strategies to map and correlate logs, metrics, and traces, unlocking deeper relationships between these signals.
Building on these correlations, we’ll showcase how OpenSearch can deliver advanced insights, enabling you to diagnose problems faster and make informed decisions.

Speakers

Karsten Schnitter

Software Architect, SAP SE

Karsten is a Software Architect at SAP. He works in the observabilty area of the SAP Business Technology Platform. Karsten is a member of the OpenSearch technical steering committee and maintainer of the Data Prepper project.

Wednesday April 30, 2025 14:30 - 15:10 CEST
Matterhorn

Analytics + Security + Observability

14:30 CEST

Building a Secure and Scalable LLM Infrastructure With OpenSearch - Pedro Guimarães & Peter De Sousa, Canonical

Wednesday April 30, 2025 14:30 - 15:10 CEST

Zurich II

OpenSearch provides several tools for search and information retrieval, important in many stages of prompt processing. However, to be used in a varied range of industries and regulations such as healthcare, telco or finance, the solution must be proven to be secure, robust and highly available.

In this talk we will discuss how to build a secure conversational chat infra from the ground up to answer your prompts, using OpenSearch. We will explore how we can use existing features of OpenSearch to build the basis of this infra, e.g. vector search and RAG. We will discuss the latest technologies such as confidential computing and hardware acceleration to get the most out of the environment. We will also explore an OpenSearch VM operator that helps with the lifecycle of the cluster. It provides the features needed to scale, upgrade, specialize nodes in different roles according to the needs and manage security such as certificate rotation and user management.

Speakers

Pedro Guimarães

Software Engineer, Canonical

Working as a software engineer designing and implementing next gen data platform automation at Canonical. I have several years of experience in open source infrastructure: contributing code, building, packaging, bug reporting and squashing.

Peter De Sousa

Field Software Engineer, Canonical

Peter De Sousa is a solutions architect at Canonical - working at the forfront of Open Source, engaging with customers and technical teams to design and implemnent Enterprise Open Source.

Wednesday April 30, 2025 14:30 - 15:10 CEST
Zurich II

Operating OpenSearch

14:30 CEST

A Tool for Eyeballing: Better Than NDCG? - Stavros Macrakis, OpenSearch @ AWS & Eric Pugh, OpenSource Connections

Wednesday April 30, 2025 14:30 - 15:10 CEST

Zurich I

There are lots of statistics we can calculate for search relevance: NDCG, precision, MAP, …. OpenSearch 3.0 calculates and displays them for you.

But metrics don’t tell the whole story. In particular, NDCG can’t give you the qualitative analysis that one algorithm is great for author names, and a different one is good for shapes and sizes. For that, you need eyeballing, that is, human intuition and judgment.

That’s why we’ve built tools to help you dig deeper into your search results. The Search Comparison tool in OpenSearch 2.11 is just the starting point – in 3.0, it lets you define search configurations and test sets of multiple queries and determine which queries’ results have changed the most… and then zoom in to the individual cases. You can integrate data on judgments and query frequency from User Behavior Insights for deeper analysis.

In this talk, we’ll discuss how traditional statistical metrics are complemented by eyeballing, how the new tools in OpenSearch 3.0 support disciplined eyeballing, and how you can use them to improve the quality of your search results.

Speakers

Stavros Macrakis

Product Manager, Search, OpenSearch @ AWS

Stavros is passionate about search relevance. At AWS, Google, GLG, FAST, and Lycos, he has worked with a wide variety of organizations and applications, and is frequently astounded at how even large, sophisticated organizations fail to collect the data needed to evaluate and tune... Read More →

Eric Pugh

Co-Founder, OpenSource Connections

Eric Pugh is the co-founder of OpenSource Connections. Today he helps OSC’s clients, especially those in the ecommerce space, build their own search teams and improve their search maturity. Fascinated by the craft of software development, Eric Pugh has been involved in the open... Read More →

Wednesday April 30, 2025 14:30 - 15:10 CEST
Zurich I

15:15 CEST

Data Prepper or Logstash: Helping You Choose Your Ingestion - David Venable & Krishna Kondaka, Amazon Web Services

Wednesday April 30, 2025 15:15 - 15:35 CEST

Matterhorn

OpenSearch Data Prepper is a pipeline tool within the OpenSearch project for data ingestion. A common question that comes up within the open-source community is how it relates to Logstash. While both tools are open-source and designed to collect, transform, and route data from various sources to destinations, they differ significantly in their features and target use cases.

Logstash, a mature platform with a vast plugin ecosystem, provides flexible and extensive customization options. Data Prepper is a newer offering initially designed for modern observability needs, such as handling OpenTelemetry (OTel) logs, traces, and metrics. Over time, it has evolved into a general-purpose tool capable of interfacing with numerous open-source and proprietary solutions.

In this presentation, we will explore the architectural differences between Data Prepper and Logstash. We’ll also conduct a comparison of their core features, emphasizing Data Prepper's unique capabilities that enable integration with tools such as OpenTelemetry, OpenSearch, Kafka, S3, DynamoDB, and Kinesis. Finally, we'll provide practical guidance and examples to facilitate a smooth migration from Logstash to Data Prepper.

Speakers

David Venable

Senior Software Engineer, Amazon

David is a senior software engineer working on observability in OpenSearch at Amazon Web Services. He is a maintainer on the Data Prepper project. Prior to working at Amazon, he was the CTO at Allogy Interactive - a start-up creating mobile-learning solutions for healthcare.

Krishna Kondaka

Senior Software Engineer, Amazon Web Services

Krishna is a senior software engineer working on observability in OpenSearch at Amazon Web Services. He is also a contributor to the Data Prepper project. Prior to joining AWS, Krishna worked on development of AI infrastructure and caching services at Facebook. In addition, he has... Read More →

Wednesday April 30, 2025 15:15 - 15:35 CEST
Matterhorn

Analytics + Security + Observability

15:15 CEST

OpenSearch Indexes Made Easy: Terraform, Python, and a Sprinkle of Magic - Yulia Barabash, Nordcloud, IBM Company

Wednesday April 30, 2025 15:15 - 15:35 CEST

Zurich II

Versioning OpenSearch indexes is critical for maintaining data integrity, ensuring seamless updates, and enabling rollback capabilities in modern CICD pipelines. This presentation explores how Terraform and Python can be combined to manage the versioning of OpenSearch indexes effectively. By leveraging Terraform’s infrastructure-as-code capabilities and Python’s scripting flexibility, teams can automate the lifecycle management of indexes, ensuring consistent reintegration and streamlined operations. Key benefits include enhanced automation, improved traceability, and reduced manual overhead.

Speakers

Yulia Barabash

Cloud Engineer, Nordcloud, IBM Company

I have lived in Germany for the past six years, during which I have gained a diverse range of experiences in the tech industry. My expertise spans from developing web applications in Python to constructing AWS cloud solutions. Additionally, I have hands-on experience with REST API... Read More →

Wednesday April 30, 2025 15:15 - 15:35 CEST
Zurich II

Operating OpenSearch

15:15 CEST

Community-Powered Security: OpenSearch Analytics in Action - Anshuman Singh, Devfolio

Wednesday April 30, 2025 15:15 - 15:35 CEST

Zurich I

In this technical session, I'll demonstrate practical implementations of OpenSearch Security Analytics powered by community-driven detection rules. Through hands-on examples, you'll learn:

1. Configuring Security Analytics dashboards for threat detection
2. Building and sharing custom detection rules that benefit the community
3. Testing and validating community-contributed security rules
4. Contributing your validated rules back to OpenSearch

The demonstrations will cover security rule syntax, detection logic, and dashboard configuration. You'll learn both the technical implementation and the collaborative workflow for sharing security rules with the community. We'll explore how shared security patterns strengthen the entire OpenSearch ecosystem, turning individual security insights into community-wide protection.

Target Audience: Security practitioners and OpenSearch operators with basic security monitoring knowledge.

Speakers

Anshuman Singh

Community and Operations, Devfolio

Hey team! Anshuman here :D I work with Devfolio in community and operations, with a tech background including OSS contributions to GitLab (GSoC) and Web3 projects (MLH Fellowship). I'm highly intrigued by security, particularly Code Scanners, and while I don't get much time to explore... Read More →

Wednesday April 30, 2025 15:15 - 15:35 CEST
Zurich I

Security Education + Community Development

15:35 CEST

Break

Wednesday April 30, 2025 15:35 - 15:50 CEST

Atrium Foyer

Wednesday April 30, 2025 15:35 - 15:50 CEST
Atrium Foyer

Breaks + Special Events

15:50 CEST

Using OpenSearch With OpenTelemetry To Solve Real World Scenarios - Shambhavi Sarin, Salesforce & Abhay Baiju, Atlassian

Wednesday April 30, 2025 15:50 - 16:30 CEST

Matterhorn

In this presentation, we’ll go over a real world scenario where we used OpenTelemetry to collect data from logs, metrics and traces and OpenSearch to store and search them. We were involved in the migration to OpenSearch in a food delivery company with close to a million orders a day. To observe the performance of its microservices, a large amount of data was collected and monitored in real time on dashboards.

In the checkout flow from adding an item in the cart to placing an order, several teams were involved. They had their own microservices and dashboards to observe them. So to trace any bug, the teams were relying on an internal order id. This id was not part of the contract of all services and thus made it hard to debug.

Here’s when we introduced distributed tracing using context across all microservices. We migrated to OpenTelemetry and OpenSearch and made changes in the logs, metrics and traces of all services across teams. This made it easier to search logs and look for issues effectively. In this discussion, we’ll discuss this scenario and the challenges we faced as part of implementing it. We will also discuss the benefits of this approach we observed afterwards.

Speakers

Shambhavi Sarin

Member of Technical Staff, Salesforce

Abhay Baiju

Software Engineer, Atlassian

Wednesday April 30, 2025 15:50 - 16:30 CEST
Matterhorn

Analytics + Security + Observability

15:50 CEST

Building a Communication Platform With OpenSearch for Optimized Text and Multi-Modal Data - Satej Sahu, Zalando SE

Wednesday April 30, 2025 15:50 - 16:30 CEST

Zurich II

Building a communication platform that handles diverse data types—emails, chats, attachments, and files—can be complex. Storing and organizing this data in a way that makes it searchable, optimizable, and queryable is key to providing valuable insights. Using OpenSearch as the backbone for data storage and search, this presentation explores how to structure multi-modal data and integrate it with Retrieval-Augmented Generation (RAG) applications powered by Large Language Models (LLMs).

The goal is to help users query and generate contextual replies based on a wide variety of input formats. We will share a use case showcasing how OpenSearch can be leveraged to create a seamless experience for managing and retrieving text-based and multimodal data efficiently. Tips and insights from our experience building such an application will be shared, covering best practices for managing data at scale, optimizing search performance, and implementing LLM-based feedback mechanisms to assist users in formulating contextually relevant responses.

Speakers

Satej Sahu

Principal Data Engineer, Zalando SE

Satej works as Principal Data Engineer at Zalando SE with over 14 years of experience in the industry. He has worked with renowned organizations such as Boeing, Adidas, Honeywell specializing in architecture, big data and machine learning use cases. With a strong track record of architecting... Read More →

Wednesday April 30, 2025 15:50 - 16:30 CEST
Zurich II

Security Education + Community Development

15:50 CEST

Partner Roundtable

Wednesday April 30, 2025 15:50 - 17:15 CEST

Zurich I

Wednesday April 30, 2025 15:50 - 17:15 CEST
Zurich I

Partner Roundtable

16:35 CEST

Exploring Tiered Caching in OpenSearch: Optimizing Performance With Multi-Layered Caching Strategies - Ankit Jain & Sagar Upadhyaya, Amazon Web Services

Wednesday April 30, 2025 16:35 - 17:15 CEST

Zurich II

Join us for an in-depth exploration of tiered caching in OpenSearch, a powerful search and analytics engine. Caching plays a crucial role in optimizing performance for performance-intensive applications like OpenSearch. This session delves into the limitations of on-heap caching and introduces tiered caching, a multi-layered caching approach that balances performance and capacity. Learn how tiered caching leverages both on-heap and disk-based caches to store larger datasets efficiently without consuming excessive heap memory. Discover the workings of tiered caching, its benefits, and when to implement it. Uncover performance test results comparing tiered caching with the default on-heap cache, and get insights into future enhancements in tiered caching technology. Don't miss this opportunity to enhance your understanding of caching strategies in OpenSearch for improved query response times and application performance.

Speakers

Ankit Jain

Software Engineer, AWS

Ankit Jain is a Software Engineer working on Amazon OpenSearch Service. He is an active contributor and a maintainer of OpenSearch.

Sagar Upadhyaya

Software engineer at AWS Opensearch, Amazon

Sagar is a Software Engineer working on Amazon OpenSearch Service. He is an active contributor to the OpenSearch Project, primarily focused on search performance and resiliency-related features.

Wednesday April 30, 2025 16:35 - 17:15 CEST
Zurich II

Operating OpenSearch

16:35 CEST

Maximizing OpenSearch Cluster Performance: A Comprehensive Benchmarking Approach - Govind Kamat & Mike Oviedo, Amazon

Wednesday April 30, 2025 16:35 - 17:15 CEST

Matterhorn

Performance testing OpenSearch clusters requires careful consideration of numerous variables and methodologies. While OpenSearch Benchmark (OSB) and its associated workloads provide powerful tools for cluster evaluation, many users struggle to implement effective testing strategies that yield meaningful, reproducible results.

In this comprehensive session, we'll dive more deeply into OSB best practices, moving beyond basic benchmarking to explore topics such as how to select and size appropriate workloads, handle common pitfalls and leverage more advanced features like custom workloads and gradual ramp-up to simulate realistic production scenarios. An understanding of critical aspects that are often overlooked such as warm-up periods, proper load generator sizing and techniques to analyze statistical significance will help you obtain actionable insights into how your OpenSearch cluster scales and performs under various operational conditions.

Whether you're a DevOps engineer, database administrator, or performance analyst, this talk will equip you with the tools and methodologies needed to unlock the full potential of your OpenSearch deployment.

Speakers

Govind Kamat

Performance Engineer at Amazon, Amazon

Govind Kamat is a Database Engineer at AWS, working on performance and benchmark tools for OpenSearch. He is a maintainer on the OpenSearch Benchmark project. His background is in the area of distributed systems performance and he has prior experience in the development of large-scale... Read More →

Mike Oviedo

Software Engineer at AWS, Amazon

Michael Oviedo is a software engineer at AWS, working on performance and benchmarking tools for OpenSearch. He is a maintainer of the OpenSearch Benchmark project. Outside of work he enjoys playing golf and visiting national parks.

Wednesday April 30, 2025 16:35 - 17:15 CEST
Matterhorn

Operating OpenSearch

17:15 CEST

Search Party

Wednesday April 30, 2025 17:15 - 19:15 CEST

Atrium Foyer

Wednesday April 30, 2025 17:15 - 19:15 CEST
Atrium Foyer

Breaks + Special Events

08:00 CEST

Registration

Thursday May 1, 2025 08:00 - 16:30 CEST

Atrium Foyer

Thursday May 1, 2025 08:00 - 16:30 CEST
Atrium Foyer

Registration

10:00 CEST

Keynote Sessions To Be Announced

Thursday May 1, 2025 10:00 - 11:00 CEST

Matterhorn

Thursday May 1, 2025 10:00 - 11:00 CEST
Matterhorn

Keynote Sessions

11:00 CEST

Break

Thursday May 1, 2025 11:00 - 11:15 CEST

Atrium Foyer

Thursday May 1, 2025 11:00 - 11:15 CEST
Atrium Foyer

Breaks + Special Events

11:15 CEST

Analytics Performance at Scale: The OpenSearch Star Tree Index Journey - Bharathwaj G, Amazon

Thursday May 1, 2025 11:15 - 11:55 CEST

Zurich II

In observability and analytics workloads, aggregation queries are fundamental but often become a performance bottleneck as OpenSearch aggregations scale linearly with document count, leading to unpredictable latencies and resource consumption.

This session presents a technical deep dive into how we improved performance of OpenSearch aggregations by implementing star tree index, a sophisticated multi-field indexing structure that delivers up to 100x faster aggregations while maintaining predictable query latencies.

We'll walk through the complete journey of implementing star tree index in OpenSearch, from initial design challenges to production ready feature development.

The presentation covers the technical architecture that enables pre-computing aggregations during indexing, the complex merge operations that maintain performance during segment merges, and the sophisticated query algorithms that leverage star nodes for efficient pruning.

Through real-world benchmarks from various analytical workloads, we'll demonstrate how star tree indexes achieve dramatic performance improvements while managing storage overhead to be less than 1% for typical use cases along with tradeoffs.

Speakers

Bharathwaj G

SDE 2, Amazon

Experienced backend developer with 9+ years specializing in distributed systems and cloud technologies. Currently working as SDE 2 at AWS, contributing to OpenSearch's core functionalities.

Thursday May 1, 2025 11:15 - 11:55 CEST
Zurich II

Analytics + Security + Observability

11:15 CEST

Improve Action House Search With Vector Capabilities: Bedrock or SageMaker Serverless Inference - Mikhail Chumakov, Actum Digital

Thursday May 1, 2025 11:15 - 11:55 CEST

Zurich I

Search engines guide users from their initial goals to the information that fulfills those goals. The retrieved items are deemed relevant when they align with the user's intent. Ensuring relevant results involves having the data in the catalog, analyzing it accurately, representing it through text and vectors, ranking it appropriately, and performing other actions.
In this session, discover how auction houses utilize vector search, powered by Amazon OpenSearch Service, to find similar items within their extensive database, enhancing the customer experience and preventing issues with counterfeit artworks, and see how it assists users in obtaining the most relevant results.
This session also uncovers some peculiarities in getting embeddings with AWS Bedrock and AWS SageMaker serverless inference for the abovementioned goals.

Speakers

Mikhail Chumakov

Cloud software engineer, AWS Community builder, Actum Digital

Over 19 years of experience in software development and design. I have been passionate about cloud technologies for the last nine years and am impressed by how they can help engineers in their work and deliver solutions much faster and more efficiently. For the last 4 years, my... Read More →

Thursday May 1, 2025 11:15 - 11:55 CEST
Zurich I

11:15 CEST

Uber’s Innovations in OpenSearch for a Cloud Native, Serverless Future - Pallavi Priyadarshini, Amazon Web Services; Yupeng Fu & Shubham Gupta, Uber

Thursday May 1, 2025 11:15 - 11:55 CEST

Matterhorn

In this session, Uber, a premier member of the OpenSearch Foundation, will share how the unique demands of their low-latency, high-throughput search platform have driven impactful contributions to the OpenSearch project.

The discussion will explore Uber’s collaboration with the OpenSearch community to integrate critical learnings and innovations from their own search platform. Key highlights include the development of a modular, cloud-native architecture with clear separation between readers and writers, a high-performance messaging protocol for inter-service communication, and a pull-based indexing model.

These advancements, along with contributions from the broader OpenSearch community, are shaping OpenSearch into a cutting-edge, serverless open-source search engine tailored for enterprise needs. Join this session to discover how pioneering work from Uber and OpenSearch is paving the way for the next generation of high performance and scalable search technology in open source.

Speakers

Pallavi Priyadarshini

Sr. Software Development Manager, Amazon Web Services

Pallavi Priyadarshini is a senior engineering manager at Amazon Web Services, leading engineering for high-performing and scalable search and security technologies for the OpenSearch Project and Amazon OpenSearch Service. Previously, she held leadership positions at IBM focused on... Read More →

Yupeng Fu

Principal Engineer, Uber Inc

Yupeng is a Principal Engineer at Uber and he leads Uber's Real-time Data and Search Platform. including multiple mission-critical services powered by several open-source technologies like Kafka/Flink/Pinot as well as a Search platform over Apache Lucene. Before Uber, he was a founding... Read More →

Shubham Gupta

Sr Manager, Engineering, Uber

Shubham Gupta is a Senior Engineering Manager in the Platform Engineering organization at Uber. He leads a team of engineers to develop a high-performing, and scalable search platform that powers several product surfaces. He is an OpenSearch TSC member. Prior to Uber, Shubham worked... Read More →

Thursday May 1, 2025 11:15 - 11:55 CEST
Matterhorn

12:00 CEST

Mastering and Monitoring Our Smart Home With OpenSearch - Pietro Mele & Benjamin Dauvissat, Adelean

Thursday May 1, 2025 12:00 - 12:20 CEST

Zurich II

Who watches the watchmen?

Released several years ago, the open-source project Home Assistant is becoming increasingly popular for managing our smart homes. Its plugin architecture and the large number of supported protocols provide real versatility. But once set up, how can we be sure that everything is running smoothly? How can we make use of the collected data?

First, we will demonstrate how to collect data from Home Assistant using its plugin. Then, we will explore our data with the help of the OpenSearch Dashboard. Finally, we will show how to make our smart home devices' data useful through anomaly detection and alerting.

In a comprehensive demonstration based on a real-life scenario, we will thoroughly explore all facets of OpenSearch monitoring.

Speakers

Pietro Mele

Software engineer, Adelean

Italian, adopted by France not long ago, I am a constant learner, dedicated to computer science and discovery—whether uncovering solutions or gaining insights.

Benjamin Dauvissat

Java developer, search consultant, Adelean

Curious and passionate. Java developer and Elasticsearch consultant. I try to pass on what I learned before it becomes obsolete.

Thursday May 1, 2025 12:00 - 12:20 CEST
Zurich II

Analytics + Security + Observability

12:00 CEST

Muti-tenant Workload Management in OpenSearch - Kaushal Kumar, Amazon & Ankit Jain, AWS

Thursday May 1, 2025 12:00 - 12:40 CEST

Zurich I

Dive deep into OpenSearch workload management and optimize your cluster's performance and resource allocation. This talk is suitable for both seasoned users and newcomers to OpenSearch.

We'll cover workload management fundamentals, exploring core concepts and principles specific to OpenSearch environments. You'll discover the benefits through real-world scenarios. We'll also guide you through implementation strategies, offering best practices and helping you avoid common pitfalls.

Gain insights into the various resource types supported by OpenSearch's workload management feature, enabling informed allocation decisions. We'll update you on current capabilities and provide a glimpse into the exciting future roadmap of this feature.

By attending, you'll gain actionable insights for immediate application, learn to address common OpenSearch challenges. This talk is ideal for OpenSearch administrators, DevOps professionals with large-scale search and analytics, IT decision-makers, and open-source enthusiasts.

Join us to master WLM in OpenSearch. Enhance your skills, optimize your clusters, and become part of the vibrant OpenSearch community driving innovation in search technology.

Speakers

Kaushal Kumar

Software Development Engineer, Amazon

Kaushal Kumar is a Software Development Engineer at Amazon Web Services, specializing in OpenSearch Performance optimization and Resiliency. With 7+ years of experience, he leads critical projects in distributed systems and cloud technologies.

Ankit Jain

Software Engineer, AWS

Ankit Jain is a Software Engineer working on Amazon OpenSearch Service. He is an active contributor and a maintainer of OpenSearch.

Thursday May 1, 2025 12:00 - 12:40 CEST
Zurich I

12:00 CEST

Cross-Reference Code Mapping System With Opensearch - Irine Benoy & Ismaël Hassane, Oracle

Thursday May 1, 2025 12:00 - 12:40 CEST

Matterhorn

Leveraging OpenSearch, we propose a Cross-Reference Code Mapping System to dynamically map medical products across terminologies and regulatory frameworks. For example, it maps Paracetamol (UK) to Acetaminophen (US), including dosage details and regulatory codes. Using nested documents, the system efficiently stores and retrieves all related data. Semantic search enables queries like "pain relief tablets," returning relevant matches across terminologies.

Additionally, by incorporating Cross-Cluster Search, the system seamlessly queries datasets stored across multiple clusters, such as those dedicated to specific regions or regulatory frameworks. This ensures unified data access while maintaining localized storage and compliance with regional regulations. Cross-Cluster Search also ensures scalability, allowing new datasets or regions to be added incrementally without disrupting operations.

Powered by OpenSearch, this system improves data interoperability, enhances medication accuracy, reduces errors, and streamlines research workflows. Its scalable design adapts to the evolving needs of the global healthcare community.

Speakers

Irine Benoy

Open-Source Specialist, Oracle

Irine Benoy is an Open-Source Specialist at Oracle, empowering organizations across the EMEA region to leverage open-source technologies on Oracle Cloud Infrastructure for scalable, data-driven solutions. She helps businesses simplify complex architectures, optimize efficiency, and... Read More →

Ismaël Hassane

Cloud Solution Architect, Oracle

Cloud Solution Architect with 10 years of experience, I specialize in data, analytics, and AI. In fact, I've held various positions as a developer and architect in both pre-sales and implementation roles. On a daily basis, I interact with a wide range of sectors across EMEA.

Thursday May 1, 2025 12:00 - 12:40 CEST
Matterhorn

Security Education + Community Development

12:20 CEST

Powering up OpenSearch: A Journey of How OpenSearch Became Faster at Indexing - Mohit Godwani, Amazon

Thursday May 1, 2025 12:20 - 12:40 CEST

Zurich II

Since the inception of OpenSearch, the indexing capabilities of OpenSearch have evolved to become faster at parsing documents, handling inter node traffic, replicating documents, and creating more efficient data structures. This has mode OpenSearch faster at indexing. The talk will cover how OpenSearch is able to improve indexing one use-case at a time, what is the methodology followed, how are the improvements measured, and how they translated to user success stories.

Also, with too many optimizations, comes the responsibility of understanding those, and enabling those for your use-cases.
In OpenSearch, ABC templates are predefined system templates designed to simplify the process of configuring indexes for various use cases by providing predefined settings and configurations out of the box. These templates encapsulate various optimized settings, mappings, and configurations tailored for different use cases, eliminating the need to manually handle each setting individually. The talk will also add details on how the idea came along, and how it provide a seamless out of box experience for new and seasoned users of OpenSearch.

Speakers

Mohit Godwani

Senior Software Development Engineer, Amazon

Mohit is a Senior Software Development Engineer at Amazon OpenSearch. He is interested in distributed systems, systems performance, and databases. He has been an OpenSearch contributor since 2021. At Amazon, he works with the indexing as primary area of interest and has contributed... Read More →

Thursday May 1, 2025 12:20 - 12:40 CEST
Zurich II

Analytics + Security + Observability

12:40 CEST

Lunch

Thursday May 1, 2025 12:40 - 13:45 CEST

Atrium Foyer

Thursday May 1, 2025 12:40 - 13:45 CEST
Atrium Foyer

Breaks + Special Events

13:45 CEST

The OpenSearch Playbook: Lessons Learned From Real-World Operations - Meha Bhalodiya, Red Hat & Pratik Singh, GitLab

Thursday May 1, 2025 13:45 - 14:05 CEST

Matterhorn

Imagine deploying OpenSearch to power search and analytics for millions of users—only to find unexpected roadblocks waiting at every turn. From managing massive data volumes to tuning performance under tight SLAs, the journey was far from smooth but rich with lessons. In this talk, we’ll take you behind the scenes of our real-world OpenSearch implementation, sharing war stories, hard-won insights, and practical strategies that helped us turn chaos into a well-oiled machine.

Through interactive storytelling, we’ll explore:
• How we scaled OpenSearch clusters to handle unpredictable growth.
• The pitfalls we encountered (and resolved) with indexing, querying, and resource optimization.
• Real examples of troubleshooting and automation techniques that saved us time and effort.

Whether you’re just starting with OpenSearch or already managing production workloads, this session is your chance to peek into our playbook, ask questions, and leave with actionable takeaways to conquer your operational challenges.

Speakers

Meha Bhalodiya

Software Quality Engineer, Red Hat

A Software Quality Engineer at Red Hat, where I work with the OpenShift Container Platform team. Apart from the full-time job, I also participate in upstream community initiatives, such as being a Branch Manager in v1.31, a CI Signal Lead in Kubernetes Release v1.28 (been a shadow... Read More →

Pratik Singh

Distribution Engineer, GitLab

I am a software developer with expertise in DevOps and Golang. I have worked at several companies, including GitLab, NASDAQ, Mercari Japan, HackerRank, GitHub, and JUSPAY. I am passionate about leveraging DevOps practices and tools to streamline software development processes... Read More →

Thursday May 1, 2025 13:45 - 14:05 CEST
Matterhorn

Operating OpenSearch

13:45 CEST

PutOpenSearchVector QueryOpenSearchVector: Use Case of Two Python NiFi Processors for OpenSearch - Vincenzo Lombardo, Seacom

Thursday May 1, 2025 13:45 - 14:05 CEST

Zurich II

With NiFi version 2.x, the ability to interface with OpenSearch using pre-built Python components (processors) was introduced.

These processors address various needs related to AI solutions, specifically vector embedding using tools like ChatGPT or HuggingFace. The selection and implementation of these components were partly driven by the increasing interest in these topics in recent times.

In the presentation, we will showcase an ETL flow for populating an OpenSearch index with vector fields. The flow is built using NiFi for both data acquisition and vector embedding generation, as well as querying via the dedicated OpenSearch components.

A growing trend in recent times is the demand for AI systems that use local engines, independent of external access.

As an example of possible application, we will present a solution based on customizing PutOpenSearchVector QueryOpenSearchVector processors to perform vector embedding and search using local LLMs based on Ollama.

Speakers

Vincenzo Lombardo

Operations Manager and Team Leader Nifi, Seacom

I follow the technologies related to the No Code area with a focus mainly on the nifi ecosystem (nifi, minifi, nifi registry, c2 server, nifikop) and its use in the etl field and integration with other information systems. I have experience in the search field (Google Search Appliance... Read More →

Thursday May 1, 2025 13:45 - 14:05 CEST
Zurich II

13:45 CEST

OpenSearch Lite - Nagaraj G, Amazon

Thursday May 1, 2025 13:45 - 14:05 CEST

Zurich I

Edge computing has gained significant importance since it handles data close to its source, enabling real-time processing and low-latency analytics. This presentation will provide ideas on how OpenSearch can be adapted for edge environments, focusing on practical strategies to address challenges such as resource constraints, data synchronization, and intermittent/low network connectivity and also insights from real-world use cases, discuss best practices for lightweight deployments, and showcase innovative techniques to optimize OpenSearch for edge scenarios like IoT, smart cities, and industrial automation

I would like to initiate collaborative discussions and engage attendees about real world challenges, potential solutions and innovation to OpenSearch in this regard and offline-first functionalities. I’ll present technical and operational challenges of using OpenSearch in edge environments and also actionable strategies to overcome these challenges, such as optimizing resource utilization, managing connectivity issues, and ensuring data consistency. This broadens OpenSearch's applicability across industries like IoT, manufacturing, retail, and healthcare

Speakers

Nagaraj G

SDE II at AWS OpenSearch, Amazon

I’m Nagaraj, working currently as SDE II at AWS OpenSearch. I work on security and search aspects of OpenSearch. Before Amazon, I worked in Akamai where Edge Computing is one of the major product and major driver for this idead. I’ve published few papers on Deep Learning and... Read More →

Thursday May 1, 2025 13:45 - 14:05 CEST
Zurich I

Security Education + Community Development

14:10 CEST

Security Monitoring of OpenSearch With OpenSearch - Nils Bandener, Eliatra & Craig Perkins, Amazon

Thursday May 1, 2025 14:10 - 14:50 CEST

Matterhorn

One of the really cool aspects of OpenSearch is its ability to serve as a monitoring tool for itself. Let's have a look at how to piece together a monitoring solution for OpenSearch using components from the OpenSearch ecosystem such as Data Prepper and OpenSearch alerting. We will focus on security aspects like authentication and authorization.

Any software dealing with confidential data needs to have a security solution providing authentication and authorization. And any such security solution should have proper monitoring. OpenSearch is no exception in this regard.

In this presentation, we will look how to use components like Audit Logs, Data Prepper and OpenSearch Alerting to create a small, but effective security monitoring solution.

This will give us two benefits at once:

- A security monitoring solution
- Insights into the workings of components like Alerting, etc. by looking at a real world example

Speakers

Craig Perkins

Software Engineer, Amazon

Craig has been engaged with the OpenSearch community since June 2022 and focuses on the Security of the platform. Craig has an extensive software engineering background of 10 years that includes managing the search infrastructure for e-commerce websites and healthcare institutions... Read More →

Nils Bandener

Software Architect, Eliatra

Freelance software architect with long track record in security and infrastructure software. Interested in finding optimal solutions which combine broad functionality with a user-centric view. Track record of many years in security software via collaborations with Search Guard and... Read More →

Thursday May 1, 2025 14:10 - 14:50 CEST
Matterhorn

Operating OpenSearch

14:10 CEST

Supercharging OpenSearch for RAG: Lessons From a Large-scale GenAI Deployment - Nabeel Janjua, HDI AG & Akarsha Sehwag, Amazon Web Services

Thursday May 1, 2025 14:10 - 14:50 CEST

Zurich II

In this session, we'll delve into the critical optimizations and fine-tuning strategies that propelled HDI Germany P&C and Life Insurance, a Talanx AG subsidiary to develop a high-performance, productionized Retrieval-Augmented Generation (RAG) based GenAI solution. Leveraging OpenSearch with hybrid search, our system now empowers 300+ employees. Our journey from concept to large-scale deployment uncovered numerous minor yet powerful tweaks that significantly enhanced both, speed and accuracy of our Opensearch indexing and retrieval mechanisms. We’ll dissect the key parameters crucial for optimal RAG performance, presenting benchmarks and metrics to quantify these improvements achieved through the optimization process.

Attendees will gain practical insights into maximizing OpenSearch's potential for RAG applications, learning how to leverage these often-overlooked adjustments to achieve substantial performance gains.
Join us for an in-depth exploration of the nuances that can make a significant difference in your OpenSearch-powered RAG solutions, and leave with actionable tips to implement in your own projects.

Speakers

Nabeel Janjua

Data Scientist, HDI AG

We are Data Scientists, working in empowering companies with AI-based solutions. We have been working with OpenSearch for 3+ years now, as part of multiple in-house solutions.

Akarsha Sehwag

GenAI Data Scientist, Amazon Web Services

Akarsha Sehwag is a Data Scientist and ML Engineer in AWS Professional Services with over 5 years of experience building ML solutions. Leveraging her expertise in Computer Vision and Deep Learning, she empowers customers to harness the power of the ML in AWS cloud efficiently. With... Read More →

Thursday May 1, 2025 14:10 - 14:50 CEST
Zurich II

14:10 CEST

Develop for Core Performance - Samuel Herman, DataStax

Thursday May 1, 2025 14:10 - 14:50 CEST

Zurich I

I'm breaking down key insights from our latest RFC that's shaping the future of core OpenSearch performance.
https://github.com/opensearch-project/OpenSearch/issues/16841

It touch on core fundemental issues that are essential to master to take the OpenSearch Core performance codebase to the next level.
In particular it surveys real live examples from OpenSearch and shows us patterns that are common in Operating systems Kernels and State of the art databases for reliable low latency high throughput performance.
The talk also provides background on core fundemental concepts for data plane engineering such as "Dynamic Memory Allocation", GC, GC tunning, Circular buffers, CPU branching, JIT, JMH profiling.

Speakers

Samuel Herman

Sr Principal Engineer, DataStax

Samuel is an OpenSearch Commiter, Maintainer, Technical Steering Committee member. He is currently the architect of DataStax OpenSearch offering and previously Architect Of OCI Search Services and OCI Observability.

Thursday May 1, 2025 14:10 - 14:50 CEST
Zurich I

Security Education + Community Development

14:55 CEST

Beyond Similar: Building Diverse Search With MMR - Joinal Ahmed, Navatech Group & Nikhil Rana, Google Cloud

Thursday May 1, 2025 14:55 - 15:35 CEST

Matterhorn

In the era of vector search and semantic similarity, returning highly relevant results is only half the battle. When search results are too similar, users must wade through redundant information to find diverse perspectives. This talk introduces Maximum Marginal Relevance (MMR) implementation in OpenSearch, a powerful technique that optimally balances result relevance with diversity.

Key takeaways will include:
- Implementing MMR reranking with OpenSearch's vector search
- Optimizing performance for large-scale deployments
- Measuring and tuning diversity metrics
- Real-world applications and success patterns

Speakers

Joinal Ahmed

head of ai, ntg

Joinal is an experienced Data Science professional with a interest on building solutions with quick prototypes, community engagements and influencing technology adoption.

Nikhil Rana

AI Consultant, Google Cloud

Nikhil is an applied data science professional with over a decade of experience in developing and implementing Machine learning, Deep Learning, and NLP-based solutions for a variety of industries like Finance, FMCG, etc. He is a passionate advocate for the use of data science to solve... Read More →

Thursday May 1, 2025 14:55 - 15:35 CEST
Matterhorn

14:55 CEST

RAG From Text and Images Using OpenSearch and Vision Language Models - Jakub Zavrel & Batu Helvacioglu, Zeta Alpha

Thursday May 1, 2025 14:55 - 15:35 CEST

Zurich II

With the rapid rise of Large Vision Language Models, radically new approaches to multimodal information retrieval have been proposed. Methods like ColPali and Document Screenshot Embeddings bypass the classical document preprocessing pipeline by representing document pages only in terms of vision based image patches. This allows unprecedented accuracy for Retrieval Augmented Generation (RAG) in answering questions about figures, tables, charts and visually complex documents like Powerpoint slides, without the hassle of complex customized extraction pipelines. And unlike earlier multimodal approaches based on CLIP (Contrastive Language-Image Pre-Training) the new approach also enables retrieval of detailed text passages from normal text documents. In this talk we will present how these methods can be implemented using OpenSearch, how this compares to other implementations, and evaluate how well the resulting multimodal RAG system performs in terms of search effectiveness and efficiency.

Speakers

Jakub Zavrel

Founder and CEO, Zeta Alpha

Jakub Zavrel is an experienced AI entrepreneur, Machine Learning and NLP technologist. Pioneered AI for Recruitment as the founder of Textkernel. Currently building a new AI-centric Search and Knowledge Management platform with Zeta Alpha in Amsterdam, with deep expertise in Gen AI... Read More →

Batu Helvacioglu

AI Researcher Intern, Zeta Alpha

MSc AI student at University of Amsterdam, currently researching Visual Document Retrieval Zeta Alpha.

Thursday May 1, 2025 14:55 - 15:35 CEST
Zurich II

14:55 CEST

Testing, Testing, Testing! - Darshit Chanpura & Derek Ho, Amazon

Thursday May 1, 2025 14:55 - 15:35 CEST

Zurich I

Geared towards developers looking to contribute to a new or existing OpenSearch or OpenSearch Dashboards plugin, this talk will explore the testing practices of the OpenSearch project in depth. We'll delve into the functional test repository and Cypress standards used for testing Dashboards plugins, providing insights into setting up robust and maintainable test suites. On the backend side, we'll cover unit, integration, and backward compatibility (BWC) testing strategies for OpenSearch plugins, ensuring stability and seamless upgrades. We'll also discuss the use of yamlRestTest for validating REST APIs and remote cluster testing to ensure seamless interoperability during development and release cycles. Finally, we'll examine the TestClusters framework from OpenSearch Core, showcasing how it simplifies testing in distributed environments. Whether you're a seasoned contributor or new to the ecosystem, this talk will equip you with the knowledge to implement effective testing in your plugins and contribute with confidence.

Speakers

Darshit Chanpura

Software Development Engineer, Amazon

Experience Software Developer with full-stack experience over 6 years. Currently working as Software Engineer on OpenSearch project as part of security plugin.

Derek Ho

Software Engineer, Amazon

Derek Ho is a software engineer working on OpenSearch

Thursday May 1, 2025 14:55 - 15:35 CEST
Zurich I

Security Education + Community Development

15:35 CEST

Break

Thursday May 1, 2025 15:35 - 15:50 CEST

Atrium Foyer

Thursday May 1, 2025 15:35 - 15:50 CEST
Atrium Foyer

Breaks + Special Events

15:50 CEST

Smarter Data, Smarter Decisions: Machine Learning Made Simple With OpenSearch - Seema Saharan, Autodesk

Thursday May 1, 2025 15:50 - 16:10 CEST

Zurich II

Machine learning can feel complex, but what if it didn’t have to be? OpenSearch takes the power of ML and puts it right at your fingertips—no extra headaches required. From detecting anomalies in real time to delivering hyper-relevant search results with vector data, OpenSearch is the ultimate partner for turning your data into actionable insights.

In this session, we’ll explore how OpenSearch effortlessly integrates machine learning into your workflows, whether through k-NN search, anomaly detection, or real-time predictions. We’ll also showcase innovative use cases like fraud detection, personalized recommendations, and predictive analytics—all powered by OpenSearch.

If you’re looking to make machine learning accessible, scalable, and downright useful, this talk will inspire you to rethink how you approach data and decision-making with OpenSearch.

Speakers

Seema Saharan

Site Reliability Engineer, CNCF Ambassador, Autodesk

Thursday May 1, 2025 15:50 - 16:10 CEST
Zurich II

15:50 CEST

The Security Guardian: Using OpenSearch for Real-Time Threat Detection - Meha Bhalodiya, Red Hat

Thursday May 1, 2025 15:50 - 16:30 CEST

Zurich I

Imagine this: your systems are humming along smoothly when, without warning, an unseen adversary slips through the cracks. A small vulnerability leads to a large-scale security breach. Could it have been prevented? Absolutely—with the right tools and strategy.

In this session, I’ll embark on an interactive journey into how OpenSearch becomes the vigilant guardian of your infrastructure. Starting with real-world scenarios, we'll explore how to harness OpenSearch’s powerful features to detect anomalies, correlate logs, and respond to threats in real-time.

You’ll see how simple queries can expose hidden patterns, dashboards can visualize attack vectors, and machine learning models can predict threats before they occur. But it’s not just about the tools—we’ll dive into best practices for deploying OpenSearch in complex environments and ensuring it scales with your security needs.

Join me to learn how OpenSearch transforms security operations, turning chaos into clarity and ensuring you stay one step ahead of cyber threats.

Speakers

Meha Bhalodiya

Software Quality Engineer, Red Hat

Thursday May 1, 2025 15:50 - 16:30 CEST
Zurich I

Analytics + Security + Observability

15:50 CEST

Unlock NextGen Agentic Product Search With ML and LLM Innovations of OpenSearch - Praveen Mohan Prasad & Hajer Bouafif, AWS

Thursday May 1, 2025 15:50 - 16:30 CEST

Matterhorn

In the realm of search, Machine Learning plays a pivotal role in enhancing the user experience throughout the entire lifecycle, from ingesting documents to delivering highly relevant results for user queries. This session will showcase various ML integrations of OpenSearch tailored to optimize outcomes for user queries in a retail scenario, accompanied by a live demonstration. We will explore cutting-edge techniques such as query understanding and rewriting using Large Language Models (LLMs), document enrichment, sparse, dense, and hybrid retrievers, as well as contextual re-ranking of results. As a highlight, you will learn how LLM agents and OpenSearch’s ML Search types can be integrated to build a AI shopping assistant that offers a conversational shopping experience for the users.

Speakers

Praveen Mohan Prasad

Analytics Specialist, AWS

Praveen Mohan Prasad is a search specialist with data science expertise who actively researches and experiments on using Machine Learning to improve search relevance. Praveen advices clients to implement and operationalise strategies to improve search experience.

Hajer Bouafif

Sr Solutions Architect @ AWS, AWS

Hajer Bouafif is a senior solutions architect in Data Analytics and ML search with a background in Big Data engineering. Hajer provides organizations with best practices and well-architected reviews to build large-scale Machine Learning search solutions.

Thursday May 1, 2025 15:50 - 16:30 CEST
Matterhorn

16:10 CEST

Optimizing OpenSearch Cluster Performance With Dynamic Sharding Strategy - Aswath Srinivasan & Robert Hoffmann, Amazon Web Services

Thursday May 1, 2025 16:10 - 16:30 CEST

Zurich II

Many OS users, especially those new to Lucene-based search engines, struggle with sharding best practices. This often results in inefficient shard sizes, leading to performance issues and resource waste. Our talk introduces a novel approach: Dynamic Sharding Strategy.

We'll explore how this strategy adaptively determines the optimal primary shard count for indices, particularly beneficial for time-series data with fluctuating ingestion rates. By analyzing past ingestion rates, cluster resources, and workload patterns, our method predicts and applies suitable shard counts for each index rollover.

We'll discuss
* Common sharding pitfalls and their impact
* The idea behind our dynamic sharding approach
* Implementation as a Python script integrated with OpenSearch
* Real-world case studies and performance improvements
* Potential for native integration into OpenSearch's Index State Management

This talk aims to empower OpenSearch users with a practical solution for maintaining optimal cluster performance, reducing storage skewness, and minimizing manual interventions in shard management. Join us to learn how dynamic sharding can revolutionize your OpenSearch cluster efficiency

Speakers

Aswath Srinivasan

Senior Search Engine Architect, Amazon Web Services

Aswath Srinivasan is a Senior Search Engine Architect at Amazon Web Services currently based in Munich, Germany. With over 17 years of experience in various search technologies, Aswath currently focuses on OpenSearch. He is a search and open-source enthusiast and helps customers and... Read More →

Robert Hoffmann

Senior Solutions Architect, Amazon Web Services

Robert Hoffmann is a Senior Solutions Architect at AWS. Before, he worked for market leading smart device and telecommunication brands, pioneering cloud native applications during the early days of Docker and Kubernetes. At AWS, he is supporting some of the world’s largest retail... Read More →

Thursday May 1, 2025 16:10 - 16:30 CEST
Zurich II

Operating OpenSearch

16:35 CEST

Building a Resilient, Petabyte-Scale Logging Platform With OpenSearch - Mark Kavanagh & Parth Pandit, Amazon Web Services

Thursday May 1, 2025 16:35 - 17:15 CEST

Zurich I

This talk will dive deep into building a multi-region, highly scalable enterprise-grade logging platform on OpenSearch. The platform can scale to handle over 100 terabytes of log ingestion per day and store over a petabyte of log data. The speaker will discuss the key challenges encountered when building a logging solution at this scale, and share the solutions leveraging open-source components like OpenTelemetry agents for log ingestion and Data Prepper for aggregation, distillation, enrichment, and buffering. Attendees will learn best practices for constructing a comprehensive, resilient logging infrastructure on top of the OpenSearch ecosystem.

Speakers

Mark Kavanagh

Principal Solution Architect, Amazon Web Services

Principal Solution Architect at AWS specializing in open-source observability solutions for financial services. With over 25 years of experience, drives cloud transformation by implementing robust monitoring architectures using tools like OpenTelemetry, Prometheus, and Grafana. Helps... Read More →

Parth Pandit

Sr. Solution Architect, Amazon Web Services

Parth Pandit has been working as a Sr. Solution Architect with AWS and in the field of computer engineering for over two decades. Parth has worked with global financial institutes to help them adopt OpenSearch for different use cases. Parth is a published author and a public speaker... Read More →

Thursday May 1, 2025 16:35 - 17:15 CEST
Zurich I

Analytics + Security + Observability

16:35 CEST

Overcoming Challenges in Building a Multi-Tenant Logging Platforms for Kubernetes - David Riepl & Maximilian Scharizer, Research Industrial Systems Engineering (RISE) Forschungs-, Entwicklungs- und Großprojektberatung GmbH

Thursday May 1, 2025 16:35 - 17:15 CEST

Zurich II

This talk will explore how OpenSearch can be leveraged to build a centralized and multi-tenant log analysis platform that provides logging-as-a-service to several Kubernetes enterprise environments.

We’ll address solutions for critical topics like cluster and tenant separation strategies, Kubernetes integration, automation, capacity management and monitoring best practices. Additionally, we’ll present our approach to non-technical challenges such as handling diverse tenant requirements, effective customer support and different areas of tenant collaboration.

Throughout the talk, there will be a strong emphasis on standardization as the primary solution component to achieve heterogeneity within the different configuration domains (retention policies, RBAC, etc.), while simultaneously maintaining the flexibility to be able adapt to customers' needs.

Drawing experience from a recent real-world implementation, this session will provide attendees with actionable insights and our lessons learned to overcome technical and operational challenges in building multi-tenant logging platforms using OpenSearch.

Speakers

Maximilian Scharizer

David Riepl

System Engineer and Product Owner, Research Industrial Systems Engineering (RISE) Forschungs-, Entwicklungs- und Großprojektberatung GmbH

David Riepl is a System Engineer and Product Owner at RISE, specializing in product development for log analysis and security monitoring. With over 15 years of experience in the field IT operations, he has developed expertise in designing and implementing highly available systems... Read More →

Thursday May 1, 2025 16:35 - 17:15 CEST
Zurich II

Operating OpenSearch

16:35 CEST

How To Search 1 Billion Vectors in OpenSearch Without Losing Your Mind or Wallet - Fernando Rejon Barrera, Zeta Alpha

Thursday May 1, 2025 16:35 - 17:15 CEST

Matterhorn

Scaling vector search to a billion vectors isn’t just a technical challenge—it’s a high-stakes balancing act of latency, cost, and quality. In this talk, I’ll share practical lessons learned from building a billion-scale system in OpenSearch, covering model selection, text processing, hardware essentials, and embedding strategies. But that’s not all: I’ll expose the tips, tricks, and gotchas you’ll need to navigate OpenSearch’s quirks without losing your sanity (or your wallet). Whether you’re scaling up or just getting started, this session will equip you to tame your vectors and succeed at scale.

Speakers

Fernando Rejon Barrera

CTO, Zeta Alpha

Fernando is the CTO of Zeta Alpha, an Amsterdam-based startup helping High-Tech and R&D Enterprises take their Generative AI projects to production. With a PhD in theoretical physics and a hacker (builder) past, Fernando brings a unique blend of theoretical knowledge and hands-on... Read More →

Thursday May 1, 2025 16:35 - 17:15 CEST
Matterhorn

17:20 CEST

Keynote: Closing Remarks

Thursday May 1, 2025 17:20 - 17:30 CEST

Matterhorn

Thursday May 1, 2025 17:20 - 17:30 CEST
Matterhorn

Keynote Sessions