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.

arrow_back View All Dates

08:30 CEST

Light Breakfast

Thursday May 1, 2025 08:30 - 09:30 CEST

Foyer I

Thursday May 1, 2025 08:30 - 09:30 CEST
Foyer I

Breaks + Special Events

08:30 CEST

Registration

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

Atrium Foyer

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

Registration

08:30 CEST

Solutions Showcase

Thursday May 1, 2025 08:30 - 17:20 CEST

Foyer I

Thursday May 1, 2025 08:30 - 17:20 CEST
Foyer I

Solutions Showcase

09:30 CEST

Keynote Sessions To Be Announced

Thursday May 1, 2025 09:30 - 10:00 CEST

Matterhorn

Thursday May 1, 2025 09:30 - 10:00 CEST
Matterhorn

Keynote Sessions

10:00 CEST

Break

Thursday May 1, 2025 10:00 - 10:15 CEST

Atrium Foyer

Thursday May 1, 2025 10:00 - 10:15 CEST
Atrium Foyer

Breaks + Special Events

10:15 CEST

Analytics Performance at Scale: The OpenSearch Star Tree Index Journey - Bharathwaj G & Sandesh Kumar, Amazon Web Services

Thursday May 1, 2025 10:15 - 10:55 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.

Sandesh Kumar

Software Developer, AWS

Sandesh is a Software Developer at AWS OpenSearch Service. He is also an active contributor to OpenSearch focused on Search performance & resiliency.

Thursday May 1, 2025 10:15 - 10:55 CEST
Zurich II

Analytics + Security + Observability

10:15 CEST

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

Thursday May 1, 2025 10:15 - 10:55 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 10:15 - 10:55 CEST
Zurich I

10:15 CEST

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

Thursday May 1, 2025 10:15 - 10:55 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

Senior Manager, AWS

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 →

Thursday May 1, 2025 10:15 - 10:55 CEST
Matterhorn

11:00 CEST

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

Thursday May 1, 2025 11:00 - 11:20 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 11:00 - 11:20 CEST
Zurich II

Analytics + Security + Observability

11:00 CEST

Muti-tenant Workload Management in OpenSearch - Kaushal Kumar & Kunal Khatua, Amazon

Thursday May 1, 2025 11:00 - 11:40 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

Kunal Khatua

Amazon

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.

Thursday May 1, 2025 11:00 - 11:40 CEST
Zurich I

11:00 CEST

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

Thursday May 1, 2025 11:00 - 11:40 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 11:00 - 11:40 CEST
Matterhorn

Security Education + Community Development

11:20 CEST

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

Thursday May 1, 2025 11:20 - 11:40 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

Mr, 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 11:20 - 11:40 CEST
Zurich II

Analytics + Security + Observability

11:45 CEST

FinOps for Observability: Reining in Hidden Monitoring Costs Across Distributed Teams - Amir Jakoby, Sawmills

Thursday May 1, 2025 11:45 - 12:25 CEST

Zurich I

FinOps has revolutionized cloud cost management, with many vendors emerging over the years to offer tools to curb skyrocketing cloud expenses. However, in distributed organizations, where teams independently adopt observability & cloud-native tooling, cost control becomes even more challenging without centralized strategies.

This talk explores how policies can enable distributed teams to balance innovation with financial accountability. We'll examine the unique challenges of managing o11y costs in these environments, where usage often grows unpredictably due to independent decisions across teams. Starting with an overview of how observability tool pricing structures create cost variability, we'll discuss key policy-driven strategies for defining data retention limits, curbing over-collection, and aligning team usage with organizational budgets.

We'll dive into real-world examples of resource-intensive services that can quickly inflate observability costs, offer benchmarks to guide cost-effective observability practices and how to codify these into cross-organizational policies, and reveal whether your teams might be unintentionally "spamming" o11y systems with unnecessary data.

Speakers

Amir Jakoby

CTO & Co-Founder, Sawmills

Amir Jakoby is a seasoned technology executive with over 18 years of experience in software engineering, leadership, & product innovation. He currently serves as Co-Founder and CTO of Sawmills.ai.Previously, as VP of Engineering at New Relic, Amir led a global team of 85 engineers... Read More →

Thursday May 1, 2025 11:45 - 12:25 CEST
Zurich I

Analytics + Security + Observability

11:45 CEST

Creating an API Definition for OpenSearch Retroactively - Pranav Garg & Sachet Jayaram Alva, Amazon

Thursday May 1, 2025 11:45 - 12:25 CEST

Matterhorn

The standard way for creating APIs is to first define the API contract, use that to generate classes and write your application around it. But what happens when the application is already in place and is actively being used by millions around the world and does not have an API contract?

We faced this issue when we set out to find a single source of truth for OpenSearch APIs. Finding none and realizing that we need to create one, we set out on a journey to create asuch specification.

This talk will deal with:
* Experience with Jest client and frustration with freeform request bodies as a customer
* The stages of development including ideation, PoC, RFC, choosing the technologies, gaining consensus and implementation
* setting up the project and integration framework (while ensuring frugality and complete coverage)
* Opening up the project to community contribution after initial implementation
* Adoption by the clients team
* Switch from Smithy to OpenAPI based on community discussion
and the FUTURE!

Speakers

Pranav Garg

Software Development Engineer, Amazon

I am Pranav Garg, or PG. An aspiring polymath with interests in software development and theoretical neuroscience, I graduated from BITS Pilani Goa with a degree in Electrical & Electronics Engineering. I’ve been with Amazon for 5 years, starting with Value Added Services before... Read More →

Sachet Jayaram Alva

Software Development Manager, Amazon

I am a Software Development Manager at Amazon OpenSearch Service, where I lead the Infrastructure Security and custom package initiatives. My team focuses on enhancing the security posture and deployment flexibility of OpenSearch Service, enabling customers to build more secure and... Read More →

Thursday May 1, 2025 11:45 - 12:25 CEST
Matterhorn

Operating OpenSearch

11:45 CEST

Enhancing Security in OpenSearch With Dynamic Authentication Methods - Sakshi Nasha, Cohesity

Thursday May 1, 2025 11:45 - 12:25 CEST

Zurich II

In this session, we will explore how to secure OpenSearch using dynamic authentication methods like SAS and STS tokens to provide temporary, granular access controls. These tokens enhance security by limiting access to specific resources, actions, or timeframes, helping ensure compliance with standards like GDPR and HIPAA.
We’ll demonstrate how to integrate STS tokens for user authentication, allowing fine-grained access control through OpenSearch’s Security Plugin. By mapping roles and validating tokens, this approach improves security, flexibility, and compliance in your OpenSearch deployment.
By the end of the session, you’ll have the knowledge to integrate dynamic credentials into OpenSearch, offering secure, time-limited access while ensuring compliance with industry standards.

Speakers

Sakshi Nasha

Software Engineer, Cohesity

I am an enthusiastic learner who believes that technology can create extraordinary impacts on the world. I enjoy public speaking and I am passionate about communities. I express my thoughts through articles and poems. My passion lies in developing innovative solutions and working... Read More →

Thursday May 1, 2025 11:45 - 12:25 CEST
Zurich II

Security Education + Community Development

12:25 CEST

Lunch

Thursday May 1, 2025 12:25 - 13:25 CEST

Mövenpick Restaurant

Thursday May 1, 2025 12:25 - 13:25 CEST
Mövenpick Restaurant

Breaks + Special Events

13:25 CEST

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

Thursday May 1, 2025 13:25 - 13:45 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 13:25 - 13:45 CEST
Zurich II

13:25 CEST

Building an Open Source Observability Stack from Raw Telemetry - Joshua Lee, Altinity

Thursday May 1, 2025 13:25 - 14:05 CEST

Matterhorn

This session will guide you through the process of building a complete observability stack from the ground up using raw telemetry data ingested directly into a datastore, combining a variety of open source signals including OpenTelemetry and Prometheus formats.

We’ll start by leveraging our existing telemetry for maximum effectiveness because telemetry without action is just storage. We'll delve into the aspects of creating OLAP cubes. We’ll use this data for creating insightful visualizations with tools like Perses.

Drawing from experience with proprietary and open source observability tools, we’ll then evolve our monitoring by adding application telemetry. We’ll use automations like eBPF to fully observe a massively distributed cloud database offering.

Whether you're starting from scratch or looking to enhance your existing observability infrastructure, join me to discover practical strategies that you can implement today.

Speakers

Joshua Lee

Developer Advocate, Altinity

Joshua is a seasoned software developer with over a decade of experience, specializing in a broad range of topics including operations, observability, agile methodologies, and accessibility. Currently, Joshua serves as a Developer Advocate for Altinity, where he creates educational... Read More →

Thursday May 1, 2025 13:25 - 14:05 CEST
Matterhorn

Analytics + Security + Observability

13:25 CEST

OpenSearch Dashboards: Past Progress and Future Roadmap - Rushabh Vora, Amazon Web Services

Thursday May 1, 2025 13:25 - 14:05 CEST

Zurich I

This session will provide an overview of key advancements in OpenSearch Dashboards delivered in 2024, including the launch of the next-generation OpenSearch UI. Highlights include multiple data source integration, OpenSearch Workspaces for tailored collaboration, and an enhanced Discover experience featuring natural language query capabilities. These updates have streamlined workflows, improved user experience, and expanded data visualization options.

Looking ahead, the session will outline the roadmap for OpenSearch Dashboards, focusing on enhancing user workflows, improving integration across observability modules, and simplifying data management. Attendees will gain insights into the platform’s direction and how it aims to address common challenges, including fragmented workflows, feature silos, and configuration complexities, to deliver a more unified and efficient analytics experience.

Speakers

Rushabh Vora

Principal Product Manager, Amazon Web Services

Rushabh Vora is a Principal Product Manager for the OpenSearch project of Amazon Web Services. Rushabh leads core experiences in data exploration, dashboards, visualizations, reporting, and data management to help organizations unlock insights at scale. Rushabh is passionate about... Read More →

Thursday May 1, 2025 13:25 - 14:05 CEST
Zurich I

Operating OpenSearch

13:45 CEST

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

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

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 KubeCon NA, KubeDay, GitLab Commit, and GitHub Universe or breaking down tech on her YouTube channel, Seema makes the complicated stuff... Read More →

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

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

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 →

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 →

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 GenAI 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... 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

Lead - OpenSearch, 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, ntg & 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 at 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

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

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

Zurich I

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/SRE, Forrester Research

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

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

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, OpenSearch @ AWS

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, RISE 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

David Riepl

System Engineer and Product Owner, RISE 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 →

Maximilian Scharizer

System Engineer, RISE GmbH

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