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OpenSearchCon Europe 2026 has ended
16-17 April 2026 | Prague, Czechia 
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IMPORTANT NOTE: Timing of sessions and room locations are subject to change.

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Friday, April 17
 

08:00 CEST

Light Breakfast
Friday April 17, 2026 08:00 - 09:00 CEST
Main Foyer

Friday April 17, 2026 08:00 - 09:00 CEST
Main Foyer
  Breaks + Networking + Special Events

08:00 CEST

Registration + Badge Pick-up
Friday April 17, 2026 08:00 - 16:00 CEST
Main Foyer

Friday April 17, 2026 08:00 - 16:00 CEST
Main Foyer
  Registration + Badge Pick-up

08:00 CEST

Coat + Bag Check
Friday April 17, 2026 08:00 - 17:30 CEST
Studio A

Friday April 17, 2026 08:00 - 17:30 CEST
Studio A
  Registration + Badge Pick-up

09:00 CEST

Keynote: Bianca Lewis, Executive Director, OpenSearch Software Foundation, The Linux Foundation
Friday April 17, 2026 09:00 - 09:15 CEST
Bohemia 2

Speakers
avatar for Bianca Lewis

Bianca Lewis

Executive Director, OpenSearch Software Foundation

Friday April 17, 2026 09:00 - 09:15 CEST
Bohemia 2
  Keynote Sessions

09:15 CEST

Sponsored Keynote: AI-Driven Deployment and Monitoring Across Federated Cloud-Edge Sites - Giampaolo Conti, AI Engineer & Benedetto Ginestra, Software Engineer, Adeptic Reply
Friday April 17, 2026 09:15 - 09:30 CEST
Bohemia 2
The IPCEI-CIS program is shaping the next wave of European cloud-edge innovation by enabling secure and sovereign digital infrastructures.
In this context, Adeptic Reply demonstrates how natural language can be transformed into a fully structured deployment request. We built an open AI powered engine capable of structuring requests being able to be executed on federated cloud-edge sites, composed of a mix of direct-managed and third parties’ nodes.
To keep these complex and inter-connected scenarios under control, we developed an observability layer allowing users to track performance deviations across the federated cloud-edge sites, ensuring reliability and transparency in the application lifecycle.

This session illustrates how structured AI workflows and federated observability come together to support the IPCEI-CIS vision and enable seamless, trustworthy deployment across distributed cloud domains.
Speakers
avatar for Benedetto Ginestra

Benedetto Ginestra

Software Engineer, Adeptic Reply
Software Engineer working with modern technologies to build impactfulsystems. His experience includes challenging domains such as personal mobility enhancement, where technology can directly improve people’s independence and quality of life. He currently contributes to the 8ra initiative... Read More →
avatar for Giampaolo Conti

Giampaolo Conti

AI Engineer, Adeptic Reply
ICT Engineer graduated from Politecnico di Torino, with a solid background incomputer engineering and advanced expertise in AI and machine learning. Currently an AI Engineer at Adeptic Reply, contributing to Europe’s digitalsovereignty by developing cutting‑edge AI solutions within... Read More →
Friday April 17, 2026 09:15 - 09:30 CEST
Bohemia 2
  Keynote Sessions

09:30 CEST

Break
Friday April 17, 2026 09:30 - 09:55 CEST
Main Foyer

Friday April 17, 2026 09:30 - 09:55 CEST
Main Foyer
  Breaks + Networking + Special Events

09:30 CEST

Solutions Showcase
Friday April 17, 2026 09:30 - 17:00 CEST
Main Foyer

Friday April 17, 2026 09:30 - 17:00 CEST
Main Foyer
  Solutions Showcase

09:55 CEST

Unified Performance Observability in OpenSearch: Integrating Workload Management and Query Insights - Lindsay Chen & Emily Guo, Amazon Web Services
Friday April 17, 2026 09:55 - 10:15 CEST
Bohemia 3
In this talk, we present the integration of Workload Management (WLM) and Query Insights (QI) in OpenSearch to provide workload-aware query performance insights. By treating WLM group information as a first-class attribute in Query Insights records, operators can filter, group, and analyze top queries in the context of workload isolation.

We’ll demonstrate how this integration enables clearer performance attribution, reduces manual data correlation, and supports more targeted optimization and troubleshooting workflows. Attendees will gain a practical understanding of how unifying WLM and Query Insights improves observability and operational efficiency in shared OpenSearch clusters.
Speakers
avatar for Lindsay Chen

Lindsay Chen

Software Engineer, Amazon Web Services
Lindsay is a Software Engineer on the OpenSearch Search team at Amazon Web Services.
avatar for Emily Guo

Emily Guo

Software Engineer, Amazon
Emily is a software engineer on the OpenSearch team, focusing on query performance analysis and observability, with contributions to Query Insights and Query Insights Dashboard.
Friday April 17, 2026 09:55 - 10:15 CEST
Bohemia 3
  Search & Apache Lucene

09:55 CEST

Using Native CPU Vectorized Instructions for 60% Speedup on Lucene's KNN Vector Search - Shubham Chaudhary, Amazon
Friday April 17, 2026 09:55 - 10:35 CEST
Bohemia 1
Single Instruction, Multiple Data (SIMD) is a key feature of modern CPUs, allowing a single instruction to process multiple data elements in parallel. For large-scale vector search workloads, fast dot-product computation is crucial for low-latency, high-throughput semantic search.

In this talk, we’ll share our experience accelerating Lucene’s vector search using native SIMD on ARM CPUs (AWS Graviton 2/3). We’ll first discuss challenges with Java's native access improvements (Project Panama) for vectorization, and why we switched to native SIMD implementations for better performance. Through architecture-specific optimizations, we reduced vector search latency on ARM-based systems by 60%.

Next, we’ll dive into the complexities of working with multiple CPU families, each with different SIMD instructions and optimizations. We’ll also share our progress on making this optimization available to all Lucene users, carefully iterating with Lucene developers to address concerns about linking native code to Lucene’s core.

Finally, we’ll highlight our efforts to make this SIMD optimization an opt-in feature and its potential impact on OpenSearch deployments on ARM at scale.
Speakers
avatar for Shubham Chaudhary

Shubham Chaudhary

Software Development Engineer, Amazon
Shubham is an Apache Lucene Committer and Software Engineer at Amazon Search, working on building and scaling the core search engine powering Amazon's product search. He joined Amazon in 2020 and has nearly 5 years of experience developing large-scale information retrieval systems... Read More →
NATIVE SIMD pdf
Friday April 17, 2026 09:55 - 10:35 CEST
Bohemia 1
  Search & Apache Lucene
  • Presentation Slides Attached Yes

09:55 CEST

Partner Roundtable
Friday April 17, 2026 09:55 - 11:05 CEST
Bohemia 2
The Partner Roundtable is a great way to interact with OpenSearch leadership and have an open dialogue about the project. We will discuss strategy, challenges and opportunities, community and collaboration, future trends, training and enablement, and project growth. And of course, you are encouraged to openly exchange ideas and experiences, ask questions, share your thoughts, and engage in meaningful discussion.

By invitation only.


Friday April 17, 2026 09:55 - 11:05 CEST
Bohemia 2
  Partner Roundtable

10:45 CEST

CANCELLED: The "Open" SOC: Architecting a Free Security Lab for 10,000 Students - Nikita Verma, Independent & Harshita Varma, juspay
Friday April 17, 2026 10:45 - 11:05 CEST
Bohemia 1
The biggest barrier to entering the cybersecurity field isn't talent; it's the cost of tools. Proprietary SIEMs (Security Information and Event Management) are expensive, leaving students with "theory" but no "practice." As a community leader who has mentored over 10,000 aspiring engineers, I realized we needed a better way.

This session explores how we used OpenSearch to build a scalable, open-source Security Operations Center (SOC) for education. We will step through the architecture of a "Training Lab" where students can ingest real attack logs, visualize threats, and practice threat hunting—all without a corporate budget.

We will discuss:

The "Free Tier" Architecture: How to deploy a multi-tenant OpenSearch cluster on Kubernetes that scales to thousands of student workloads cost-effectively.

Gamification: Using OpenSearch Dashboards to build "Capture The Flag" (CTF) scoreboards that track student progress in real-time.

The Talent Pipeline: How this open-source approach creates a generation of engineers who are "OpenSearch Native" from day one.
Friday April 17, 2026 10:45 - 11:05 CEST
Bohemia 1
  Security Education & Community Development

10:45 CEST

Sharding 2.0: Unlocking Infinite Search Scalability in OpenSearch - Vikas Bansal & Paras Jain, Amazon Web Services
Friday April 17, 2026 10:45 - 11:05 CEST
Bohemia 3
Search systems are hitting a wall. Static sharding causes hotspots, slow queries, and costly overprovisioning. But what if your search infrastructure could evolve in real time - splitting, scaling, and optimizing itself on the fly?

We present a cutting-edge dynamic shard topology in OpenSearch that redefines how scalability and search efficiency coexist. Inspired by distributed systems principles and real-world cloud constraints, this architecture uses a root-child shard model with mutually exclusive hash ranges to enable conflict-free, high-throughput ingestion and ultra-fast targeted search.

But we didn’t stop there. We embedded a playoff-style lookup algorithm - a smarter alternative to brute-force fan-out—ensuring queries scale logarithmically, not linearly.

The result?
🔹 True infinite horizontal scalability without reindexing.
🔹 Near-zero latency lookups, even during shard splits.
🔹 Elastic, self-healing architecture balancing cost, performance, and reliability.

This isn't a prototype. It's cloud-native and production-ready. If you're building systems at scale - or aiming to - this session will change how you think about search.
Speakers
avatar for Vikas Bansal

Vikas Bansal

Senior Software Engineer @ Amazon, AWS OpenSearch, Amazon
Senior Software Engineer with 12+ years of experience, currently driving online shard split for scalable search in AWS OpenSearch. Key contributor to OpenSearch Serverless launch and achieved 70% boost via async S3 multipart upload. Built a Hystrix-style circuit breaker in Go. Past... Read More →
avatar for Paras Jain

Paras Jain

SDE III, Amazon Web Services
Working with the OpenSearch Indexing Team with a focus on scale, performance and operational resiliency. Building Serverless for AWS OpenSearch.
In place Shard Splitting Europe pptx
Friday April 17, 2026 10:45 - 11:05 CEST
Bohemia 3
  Security Education & Community Development
  • Presentation Slides Attached Yes

11:15 CEST

The Forbidden Index: How We Turned OpenSearch Into a Privacy-Preserving Superhero - Unnati Mishra, Independent & Akshat Khanna, Angel One
Friday April 17, 2026 11:15 - 11:55 CEST
Bohemia 1
GDPR. HIPAA. CCPA. Red tape? Not anymore. We’ll showcase how we transformed OpenSearch into a privacy-aware analytics engine using tokenization, dynamic data masking, and a custom plugin that auto-redacts PII before indexing. Ever seen a dashboard where every number is differentially private? You will. We’ll also debate the ethics of search in a post-Roe world and open-source our “privacy score” audit tool.

Warning: This talk may ruin your faith in anonymized data… but we’ll fix it.
Speakers
avatar for Unnati Mishra

Unnati Mishra

Software Engg, Independent
As a Cloud Native & Platform Engineer, I am passionate about optimizing developer experience and scaling Kubernetes ecosystems. I have been an active member of the open-source community since 2019 and have secured top spots in various hackathons. I enjoy public speaking and connecting... Read More →
avatar for Akshat Khanna

Akshat Khanna

SDE 2, Angel One
Akshat Khanna is currently working as SDE 2, building High Performance Trading Platform at Angel One and previously worked as MTS 2 at VMware Tanzu. He has been working on Kubernetes solution for the edge and also actively contributing to open-source. He has good experience of developing... Read More →
OpenSeachCon EU 2026 compressed pdf
Friday April 17, 2026 11:15 - 11:55 CEST
Bohemia 1
  Analytics + Security + Observability
  • Presentation Slides Attached Yes

11:15 CEST

Upcoming Changes for the OpenSearch Index Authorization Mechanisms - Nils Bandener, Eliatra
Friday April 17, 2026 11:15 - 11:55 CEST
Bohemia 2
The current index authorization model in OpenSearch has a few quirks and weaknesses; these will be mostly noticeable when working in OpenSearch Dashboards or similar applications with users which have only limited access to indices. Thus, if you do not take care and forget to flip certain switches, you will encounter quite a few "Forbidden" errors in OpenSearch Dashboards.
Over the past year, we have been working on a new index authorization concept for OpenSearch. The goal is a more logical and intuitive authorization model that provides a smoother and more predictable user experience.

This new approach is expected to be introduced as an optional feature in an upcoming OpenSearch release and is planned to become the default in OpenSearch 4.

In this talk, we will explain the new authorization concept, highlight its advantages, and provide practical guidance for cluster administrators on how to roll it out safely without causing service interruptions.
Speakers
avatar for Nils Bandener

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 →
index authz opensearchcon europe 2026 pdf
Friday April 17, 2026 11:15 - 11:55 CEST
Bohemia 2
  Operating OpenSearch
  • Presentation Slides Attached Yes

11:15 CEST

Boosting OpenSearch Performance: Lucene Bulk Collection and gRPC Search in Action - Abdul Muneer Kolarkunnu & Carlos Rolo, NetApp Instaclustr
Friday April 17, 2026 11:15 - 11:55 CEST
Bohemia 3
Join us to explore the latest performance improvements in OpenSearch, highlighting the integration of Lucene’s bulk collection API and enhancements to the gRPC Search API. This session will dive into how bulk collection optimizes aggregation execution, delivering measurable gains across analytical workloads by batching operations and reducing computational overhead. We will also cover the expanded features of the gRPC Search API in OpenSearch 3.4, which now supports new query types, improved bulk requests, and multiple document formats. To make these concepts clear and practical, we will showcase live demos illustrating performance boosts in aggregation workloads and expanded query handling through gRPC. Attendees will gain a clear understanding of how these advancements significantly enhance efficiency and broaden query capabilities in real‑world use cases. Key takeaways include understanding Lucene’s bulk collection benefits, learning about new gRPC query types, and discovering improvements in bulk request handling and document format support.
Speakers
avatar for Abdul Muneer Kolarkunnu

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 other projects like OpenSearch core, Security and Cross Cluster Replication. I presented in OpenSearchCon Europe and India last year(2025) . Also, I am an OpneJDK... Read More →
avatar for Carlos Rolo

Carlos Rolo

Principal Open Source Engineer, NetApp
Boosting OpenSearch Performance pdf
Friday April 17, 2026 11:15 - 11:55 CEST
Bohemia 3
  Search & Apache Lucene
  • Presentation Slides Attached Yes

12:05 CEST

The Lucene Scalpel: Tuning Low-Level Segments for Multi-Lingual Concurrency - Divyanshu Mishra, Independent
Friday April 17, 2026 12:05 - 12:25 CEST
Bohemia 1
As European search applications scale, they face a unique challenge: maintaining high-concurrency relevance across multi-lingual datasets. When an index grows to 25GB+, standard Lucene merge policies often lead to "Segment Fragmentation," causing significant latency spikes in k-NN search. This session moves beyond basic vector implementation to perform "surgery" on the underlying Lucene engine. We explore how to tune index merge policies and custom analyzers specifically for multi-lingual shards, ensuring that 60+ concurrent streams remain performant. Attendees will learn how to optimize the physical storage of vector data to reduce I/O overhead and maintain sub-second relevance without bloating hardware costs.
Speakers
avatar for Divyanshu Mishra

Divyanshu Mishra

AI & DevOps Enthusiast, Independent
With 7.6 years of experience in IT, Divyanshu Mishra has worked with organizations such as Capgemini, Tietoevry, 66degrees, and is currently with ShellSquare Softwares. His expertise spans cloud computing, DevOps, and containerization technologies including Kubernetes and Docker... Read More →
divyanshu opensearchcon2026 17April pdf
Friday April 17, 2026 12:05 - 12:25 CEST
Bohemia 1
  Search & Apache Lucene
  • Presentation Slides Attached Yes

12:05 CEST

Road To Maintainership: Shaping OpenSearch's Future - Varun Bansal, AWS
Friday April 17, 2026 12:05 - 12:25 CEST
Bohemia 2
OpenSearch is welcoming but the path from first PR to maintainer can feel opaque. This session provides a practical, step-by-step playbook for contributing to OpenSearch and growing as a trusted maintainer.

Learn where to start (repos, good-first-issue), how to pick right-sized work, set up your environment, align with coding and testing norms, and craft high-signal PRs that are easy to review. We’ll cover collaboration habits—scoping changes, attending triages, avoiding churn, handling async reviews, documenting decisions—and show how to build credibility fast.

We’ll outline the maintainer path: observable signals (consistency, quality reviews, ownership, reliability, judgment), responsibilities (triage, design guidance, merges, releases, community health), and how nominations happen. Leave with a 30/60/90-day plan, a review-friendly PR template, and a roadmap to grow consistent contributions into visible impact.
Speakers
avatar for Varun Bansal

Varun Bansal

Sr. Software Engineer, AWS
Varun Bansal is a Software Engineer at Amazon OpenSearch Service. With 10 years of experience in software development and cloud technologies, he is passionate about developing and improving the OpenSearch Service, helping customers harness the power of open-source search and analytics... Read More →
avatar for Raghuvansh Raj

Raghuvansh Raj

SDE III, Amazon
Friday April 17, 2026 12:05 - 12:25 CEST
Bohemia 2
  Security Education & Community Development

12:05 CEST

The OSS-ential Understanding of Community Health and Metrics - Ijeoma Onwuka, Independent
Friday April 17, 2026 12:05 - 12:25 CEST
Bohemia 3
Open source powers most of today’s technology, yet many people still judge a project only by visible activity. The problem is that activity does not always reflect real health. A project can look busy while struggling behind the scenes. It can also look quiet while staying stable and strong.

This talk explores the gap between what we see on the surface and what a community is actually experiencing. It draws from my work as a contributor and member of the Linux Foundation’s CHAOSS project, where researchers and maintainers built shared ways to study open-source health in a practical and human way.

The session explains two core ideas. Sustainability covers contributor experience, documentation, onboarding, clarity, and the ability to move forward without burnout. Survivability covers risk, key person dependence, governance strength, and the ability to handle sudden change.

Attendees will learn how to ask better questions, spot early signals, avoid misreading data, and support communities with a clearer understanding of what health truly looks like. This talk is designed for community managers, contributors, OSPO teams, and anyone who works inside open source every day.
Speakers
avatar for Ijeoma Belinda Onwuka

Ijeoma Belinda Onwuka

Community Manager, Independent
Ijeoma Onwuka is an experienced Community Manager with over 3 years of building thriving communities for tech startups and non-profits. She currently leads programs at Scandium Systems Limited, creating engaging spaces for developers, technical writers, and tech enthusiasts.

Passionate about open source, she actively contributes to projects like OpenSSF, DevRel Foundation, CHAOSS, and UNICEF, focusing on the intersection of technology and community... Read More →
The OSS ential Understanding of Open Source Community Health and Metrics.pptx pdf
Friday April 17, 2026 12:05 - 12:25 CEST
Bohemia 3
  Security Education & Community Development
  • Presentation Slides Attached Yes

12:25 CEST

Lunch
Friday April 17, 2026 12:25 - 13:35 CEST
Moravia 1-3

Friday April 17, 2026 12:25 - 13:35 CEST
Moravia 1-3
  Breaks + Networking + Special Events

13:35 CEST

CANCELLED: Designing High Throughput Log Observability With OpenSearch - Shramish Kafle, KfW Bank
Friday April 17, 2026 13:35 - 14:15 CEST
Bohemia 3
Logs are the foundation of most observability platforms, but they are also where OpenSearch clusters fail first. Shard explosion, uncontrolled mappings, slow queries, and rising storage costs are common outcomes of poorly designed log workloads.

This session focuses on a single, concrete problem: how to design and operate OpenSearch for high-throughput log observability in production. Drawing from real-world experience, it goes deep into the architectural and operational decisions that matter most when handling large log volumes.

The talk covers log ingestion pipelines, index and shard design, lifecycle management, and query performance tuning specifically for observability use cases. Instead of default setups and theory, attendees will learn what actually works, what breaks at scale, and how to fix it.

By the end of the session, participants will have a practical blueprint for running OpenSearch as a reliable, cost-effective log observability platform.
Friday April 17, 2026 13:35 - 14:15 CEST
Bohemia 3
  Analytics + Security + Observability

13:35 CEST

Writable Warm: Breaking the Read-Only Barrier in OpenSearch Tiering - Sandeep Kumawat, Harshita Kaushik & Shubh Sahu, AWS Opensearch
Friday April 17, 2026 13:35 - 14:15 CEST
Bohemia 1
Cost-effective data tiering in OpenSearch has traditionally meant moving older indices to warm storage that is optimized for density rather than mutability. In practice, this comes with no write support and intrusive migration workflows that rely on forced segment merges, serial processing, and heavy CPU and IO usage—frequently impacting production workloads and operational stability.

In this talk, we introduce Writable Warm, a new tiering architecture designed for remote-storage-backed clusters that removes the read-only constraint while simplifying operations. Instead of heavyweight migrations, Writable Warm relies on fast shard relocation, block-level data access, and lazy recovery to support sustained writes and reads on warm data.

We will walk through the core design decisions behind block-level fetching, replica-aware recovery, and concurrent seamless migrations, and explain how eliminating forced merges improves stability and predictability at scale. Attendees will learn how this approach enables faster tier transitions, better resource utilization, and meaningful cost reductions—without changing application behavior or operational workflows.
Speakers
avatar for Shubh Sahu

Shubh Sahu

Software Development Engineer 2, AWS Opensearch
Shubh Sahu is a Software Development Engineer II at Amazon OpenSearch Service. With 2.5 years of experience in building distributed systems and storage solutions, he focuses on enhancing the scalability and reliability of OpenSearch, enabling customers to efficiently leverage open-source... Read More →
avatar for Sandeep Kumawat

Sandeep Kumawat

Software Development Engineer II, Amazon Web Services OpenSearch Services
Sandeep Kumawat is a Software Development Engineer II at Amazon OpenSearch Service with 2.5+ years of experience building and operating large-scale distributed systems. He works on core OpenSearch internals, focusing on scalability, reliability, and performance of storage and indexing... Read More →
avatar for Harshita Kaushik

Harshita Kaushik

Software Development Engineer, Amazon Web Services
Harshita is a Software Developer at Amazon Web Services. She has contributed to building scalable and reliable systems to help customers leverage open-source search and analytics effectively. 
WritableWarm OpenSearchConEurop2026 pdf
Friday April 17, 2026 13:35 - 14:15 CEST
Bohemia 1
  Operating OpenSearch
  • Presentation Slides Attached Yes

13:35 CEST

Fine-tuning Neural Sparse Model for Domain Specific Data From an Existing OpenSearch Index - Aswath Srinivasan & Cedric Pelvet, Amazon Web Services
Friday April 17, 2026 13:35 - 14:15 CEST
Bohemia 2
This is the sequel talk to the earlier OpenSearchCon talk on the topic “Budget Friendly Semantic Search With Neural Sparse Search”. This follow up talk we will explain shortcomings such as 1/ pre-trained lack the domain knowledge 2/ off-the-shelf-domain-specific-sparse-model are either expensive/proprietary or non-existent

Level 300-400 talk covering,
1/ Intro to Neural Sparse Search
2/ Pre-trained model shortcomings
3/ Fine-tuning pre-trained model using open-source tools
4/ Use Search Relevancy Workbench to compare pre-trained and fine-tuned sparse model search results

A recommended pre-requisite is to watch the earlier presentation on “Budget Friendly Semantic Search With Neural Sparse Search” - https://www.youtube.com/watch?v=kx71KFf-Nv0

Of course its a completely “optional” pre-requisite as the previous talk will be condensed to a 5 minute lightning talk and will serve as the introduction

This talk will be demo-heavy, showcasing the fine-tuning possibilities of sparse encoder models using data from an existing OpenSearch index, which also means that the approach is suitable for even for those niche domains for which even proprietary models are not available in the market
Speakers
avatar for Aswath Srinivasan

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 18 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 →
avatar for Cedric Pelvet

Cedric Pelvet

Principal Specialist Solutions Architect, Amazon Web Services
Cédric Pelvet is a Principal Specialist Solutions Architect at AWS, focusing on AI and near-realtime distributed systems for data like OpenSearch, Kafka and Flink.
Friday April 17, 2026 13:35 - 14:15 CEST
Bohemia 2
  Search & Apache Lucene

14:25 CEST

Scaling Welfare With Open Source: How NAV Migrated To Managed OpenSearch - Dmitry Kan, Aiven & Hans Kristian Flaatten, Norwegian Government
Friday April 17, 2026 14:25 - 15:05 CEST
Bohemia 2
The Norwegian Labor and Welfare Administration (NAV) manages 1/3 of Norway’s state budget. Supporting their "product-first" paradigm for 20,000 employees required a shift from legacy monoliths to a centralized, self-service observability stack. NAV partnered with Aiven to migrate their logging infrastructure to a managed OpenSearch environment. Aiven has been a strategic partner of NAV by hosting some of NAV’s most critical data services for many years. As a founding member of the OpenSearch Foundation with active maintainers, Aiven provided a unique advantage in helping NAV adopt OpenSearch for their application logging.
This technical deep-dive covers:
* Migration Architecture: High-throughput logging from on-premise to a managed service with zero-downtime
* Scalability & Performance: Shard rebalancing, customized scaling, and automated snapshots
* Data Pipeline: 60TB of log data, and OpenTelemetry traces with Data Prepper
* Operational Stability: Self-healing nodes and alert integrations with Slack.
We will cover usage scenarios of OpenSearch dashboards and take a close look at how Aiven delivers and operates OpenSearch as a managed service at Nav’s scale.
Speakers
avatar for Hans Kristian Flaatten

Hans Kristian Flaatten

Platform Engineer, Norwegian Government
CNCF Abassasor, Google Developer Expert (GDE) for Cloud, Grafana Champion and Platform Engineer at the Norwegian Labor and Welfare Administration (NAV) working on NAIS - a platform built to increase development speed by providing the best experience to build, run and operate appl... Read More →
avatar for Dmitry Kan

Dmitry Kan

Product Director, Search, Aiven
Dmitry is a Product Director at Aiven, leading managed OpenSearch service. Since 2010, he has specialized in search (Lucene, Solr, Elasticsearch), previously co-owning TomTom’s planet-scale map search and building the technology behind AlphaSense. At Silo.AI, he led NLP and web-scale... Read More →
Scaling Welfare with Open Source How NAV Migrated to Managed OpenSearch pdf
Friday April 17, 2026 14:25 - 15:05 CEST
Bohemia 2
  Operating OpenSearch
  • Presentation Slides Attached Yes

14:25 CEST

Building a Modern Search Engine: The Road Ahead - Eric Pugh, OpenSource Connections
Friday April 17, 2026 14:25 - 15:05 CEST
Bohemia 1
OpenSearch 3 was the first version released under the OpenSearch and Linux Foundations aegis and represented the evolution of the technology into a true open source project.  

Now we have a new challenge, delivering the best search solution in a market place that is rapidly changing. In this talk I will share the recently published roadmap for OpenSearch for 2026 and go into how this roadmap will support bringing a brand new community into the OpenSearch fold, that of data scientists and AI engineers.

This new community is characterized by "wants to use search but that doesn’t want to spend a lot of time on search". They think that hybrid search with complex rerankers like cross encoders is the first place to start, not the last place, and we need to make them feel welcome!

You will learn about how we're "compressing complexity" in OpenSearch so that the extremely powerful capabilities of the engine are easily accessible to any developer.  Leaving this talk you'll understand the direction, and most importantly, how you can get involved in driving this evolution of OpenSearch.
Speakers
avatar for Eric Pugh

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, both by leading projects and by acting as a trusted advisor.
He is an active maintainer o... Read More →
Friday April 17, 2026 14:25 - 15:05 CEST
Bohemia 1
  Search & Apache Lucene

15:05 CEST

Break
Friday April 17, 2026 15:05 - 15:30 CEST
Main Foyer

Friday April 17, 2026 15:05 - 15:30 CEST
Main Foyer
  Breaks + Networking + Special Events

15:30 CEST

CANCELLED: How To Do Deep Contextual Tracing of Agentic Decisions With OpenSearch - Amandeep Singh, Welzin
Friday April 17, 2026 15:30 - 15:50 CEST
Bohemia 3
AI agents rely on LLM reasoning or vector similarity to decide and choose tools. But these approaches lack deterministic control, explainability and low-latency guarantees. In real production systems, agents need a fast and reliable way to decide which tool to invoke based on structured rules and historical context.

With this, Agentic observability has emerged as a critical discipline in 2026, shifting from simple logging to in-depth tracing of non-deterministic, multi-step workflows. Building a reliable GenAI app monitoring strategy for tracing the reasoning chain, now becomes more important from an observability pov.

In this talk, we will demonstrate how we can understand AI Agent decisioning for tool calling and further reasoning with OpenSearch. We will showcase how OpenSearch indexes agent logs, tool call metadata, execution constraints and past outcomes.

We will showcase a live hands-on demo of OpenSearch ML, indexing the AI Agent logs-metrics and further use them to comprehend the logs to understand the functioning and reasoning of AI agents.

Confused about how AI Agents are making decisions ? Then this talk is for you !
Friday April 17, 2026 15:30 - 15:50 CEST
Bohemia 3
  Analytics + Security + Observability

15:30 CEST

From Logs To Signals: Rethinking System Monitoring With OpenSearch - Shruti Chaturvedi, Independent
Friday April 17, 2026 15:30 - 15:50 CEST
Bohemia 2
Most production monitoring follows the same path: metrics fire an alert, engineers search logs for context, and human reasoning becomes the bottleneck. A global p95 alert triggers, and 10–15 minutes later someone realizes the issue is limited to ap-south-1. Metrics and logs are tightly coupled through manual toil.

This session proposes a simple shift: logs detect first.

Structured JSON logs become system signals. These are indexed into purpose-built OpenSearch indexes, where sliding-window aggregation queries continuously evaluate system state. Queries like “p95 latency by region over 5 minutes” yield precise outcomes such as “REGION_OUTAGE: ap-south-1” instead of noisy global alerts.

Through a live demo, we show how explicit log schemas, index mappings, and Query DSL enable context-rich, machine-driven evaluation without dashboards or ad hoc searches. OpenSearch evaluates signals; actions remain external and decoupled.

The result is reduced human toil, a clearer system state, and a practical pattern that complements existing monitoring stacks without overpromising scale.
Speakers
avatar for Shruti Chaturvedi

Shruti Chaturvedi

DevOps Engineer, Independent
Shruti is a Cloud Engineer who builds bridges—from Git to GPU, from microservices to machine learning. A founding engineer turned DevOps specialist, she has architected multi-cloud systems on AWS and GCP, built self-service developer platforms with Terraform and ArgoCD, and instrumented... Read More →
logs as signals opensearchcon 26 pdf
Friday April 17, 2026 15:30 - 15:50 CEST
Bohemia 2
  Analytics + Security + Observability
  • Presentation Slides Attached Yes

15:30 CEST

Teaching OpenSearch To Read YAML: Finding Broken Infrastructure Before It Breaks - Unnati Mishra, Independent
Friday April 17, 2026 15:30 - 15:50 CEST
Bohemia 1
Every infrastructure outage tells the same story: a YAML mistake years in the making, hiding in plain sight until production burns. Teams patch symptoms, not causes because today's tools treat manifests as dumb text.

This talk reveals how OpenSearch becomes your infrastructure's immune system: a semantic search engine that understands Kubernetes YAML intent, not syntax. We transform manifests into queryable configuration graphs, parsing what matters-resource quotas, RBAC permissions, network policies, dependency chains rather than line counts.

Attendees will learn how OpenSearch can be used as a preventive debugging tool for infrastructure, enabling teams to detect configuration risks earlier and reason about changes with greater confidence.
Speakers
avatar for Unnati Mishra

Unnati Mishra

Software Engg, Independent
As a Cloud Native & Platform Engineer, I am passionate about optimizing developer experience and scaling Kubernetes ecosystems. I have been an active member of the open-source community since 2019 and have secured top spots in various hackathons. I enjoy public speaking and connecting... Read More →
Teaching OpenSearch To Read YAML Finding Broken Infrastructure Before It Breaks pdf
Friday April 17, 2026 15:30 - 15:50 CEST
Bohemia 1
  Operating OpenSearch
  • Presentation Slides Attached Yes

16:00 CEST

Fluent Bit & OpenSearch: The Power Couple of Open Source Observability - Patrick Stephens, Fluent Bit Maintainer
Friday April 17, 2026 16:00 - 16:40 CEST
Bohemia 1
In the world of cloud-native observability, the "Golden Signal" is only as valuable as the pipeline that carries it. To build a truly vendor-neutral, scalable observability stack, look to Fluent Bit for high-performance telemetry routing and OpenSearch for robust search and analytics. This session dives into why these two projects form the "Power Couple" of the open-source ecosystem. One excels at being a lightweight, sub-millisecond processor at the edge, the other providing the distributed backend required to make sense of that data.

What we will cover:

- The "Why" Behind the Pairing: An exploration of how Fluent Bit’s low-resource footprint perfectly complements OpenSearch’s high-performance indexing.
- Streamlined Integration: Practical demonstrations of configuring the Fluent Bit OpenSearch output plugin.
- Zero to Dashboard: A walkthrough of the developer workflow—from containerized deployment using Podman to visualizing live telemetry in OpenSearch Dashboards.

Attendees will walk away with an understanding of the advantages to this couple and access to a free online hands-on workshop: https://o11y-workshops.gitlab.io/workshop-fluentbit
Speakers
avatar for Patrick Stephens

Patrick Stephens

Co-Founder, Telemetry Forge
K8S, Golang, C/C++ backend, infra and DevOps highly cleared engineer for startups and defence

Over 20 years experience in software engineering, mostly in the defence domain at Thales. The last few years of this were focused on transformation first to containers then Kubernetes.

Aft... Read More →
OpensearchCon 2026 Fluent Bit & Opensearch The Power Couple of Open Source Observability pdf
Friday April 17, 2026 16:00 - 16:40 CEST
Bohemia 1
  Analytics + Security + Observability
  • Presentation Slides Attached Yes

16:00 CEST

Caching for Speed: Practical Performance Optimization in OpenSearch & Lucene - Sagar Upadhyaya & Ankit Jain, Amazon Web Services
Friday April 17, 2026 16:00 - 16:40 CEST
Bohemia 2
Caching is essential for achieving low latency and high throughput in search systems, yet it’s often misunderstood or misused. OpenSearch and Lucene provide multiple caching layers—such as the request cache, field data cache, and Lucene query cache—each designed for different workloads and access patterns.

In this talk, we break down how OpenSearch caches work, when they help, and common pitfalls that lead to low hit rates or wasted memory. We share lessons from real production systems, showing how tuning, architectural choices, and benchmark-driven evaluation improve cache effectiveness, performance, and resiliency.

We then discuss optimizations across key cache layers — the request cache, field data cache, and Lucene query cache — and the impact they have on real workloads.

Finally, we introduce tiered caching, when it makes sense, how it integrates with existing cache layers, and the trade-offs involved.

This session is intended for engineers who want a practical understanding of caching in OpenSearch and Lucene and actionable guidance for improving search performance in production.
Speakers
avatar for Sagar Upadhyaya

Sagar Upadhyaya

Software engineer at AWS Opensearch, Amazon Web Services
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.
avatar for Ankit Jain

Ankit Jain

Lucene Committer | OpenSearch Maintainer | AWS OpenSearch, Amazon
Ankit Jain is a Software Engineer on the Amazon OpenSearch Service team, leading performance and scalability initiatives for search infrastructure. He is an active maintainer and committer for the Apache Lucene and OpenSearch projects, with hands-on experience operating large-scale... Read More →
Friday April 17, 2026 16:00 - 16:40 CEST
Bohemia 2
  Search & Apache Lucene

16:00 CEST

Unlocking Next-gen Semantic Search With OpenSearch 3.x - Pietro Mele & Lucian Precup, Adelean
Friday April 17, 2026 16:00 - 16:40 CEST
Bohemia 3
Search has evolved from matching tokens to understanding intent, but the new challenge is doing it at scale, with high precision and low latency.

In this session, we define the "State of the Art" for OpenSearch 3.x by diving into its most advanced retrieval and optimization capabilities.

We will move beyond basic k-NN to showcase specific ranking techniques, including Radial Search for precise vector scoping and Maximal Marginal Relevance (MMR) to solve the "diversity problem" in AI-generated results.

Crucially, we will look under the hood at Memory Optimized Search to demonstrate how to reduce infrastructure footprint without sacrificing accuracy. We will explain how techniques like Asymmetric Distance Computation and Random Rotation drive the latest quantization engines, allowing you to run billion-scale vector workloads efficiently.

Finally, we will show how to operationalize these complex architectures using the new OpenSearch Workflow Builder.
Attendees will see how to chain these advanced processors into reusable AI search pipelines using a visual interface, proving that next-generation semantic search can be both powerful and accessible.
Speakers
avatar for Pietro Mele

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.
avatar for Lucian Precup

Lucian Precup

CTO, Adelean
Lucian Precup is the CTO of [all.site](https://all.site/) - the collaborative search engine developed at [Station F](http://stationf.co) in Paris. With his colleagues at [Adelean](http://adelean.com), Lucian develops solutions for indexing, searching and analyzing data. Lucian regularly... Read More →
Unlocking Next gen Semantic Search With OpenSearch 3.x pdf
Friday April 17, 2026 16:00 - 16:40 CEST
Bohemia 3
  Search & Apache Lucene

16:50 CEST

Keynote: Closing Remarks - Kris Freedain, Senior Community Manager & Patti Juric, Senior Marketing Content Manager, OpenSearch Project
Friday April 17, 2026 16:50 - 17:00 CEST
Bohemia 2

Speakers
avatar for Kris Freedain

Kris Freedain

Senior Community Manager, OpenSearch Project
Kris Freedain (he/him) is the Senior Community Manager for the OpenSearch Project, OpenSearch Software Foundation, and technical steering committee. He is also an OpenSearch Ambassador. He has decades of experience in tech, but finds connecting people to be the most fulfilling part... Read More →
avatar for Patti Juric

Patti Juric

Senior Marketing Manager, Content & Partner Strategy, OpenSearch Project
Patti Juric is Senior Marketing Content Manager for the OpenSearch Project, where she leads content, events, and partner strategy. She serves on the OpenSearch Software Foundation Marketing Committee and chairs the Program Committee for the Linux Foundation's Observability Summit... Read More →
Friday April 17, 2026 16:50 - 17:00 CEST
Bohemia 2
  Keynote Sessions
 
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