Open Source Summit Europe 2025: Full Schedule

25-27, August 2025
Amsterdam, Netherlands
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Note: The schedule is subject to change.

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This schedule is automatically displayed in Central European Summer Time, CEST (UTC +2). To see the schedule in your preferred timezone, please select from the drop-down menu to the right.

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

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11:00 CEST

Modern Application Debugging: An Introduction To OpenTelemetry - Joshua Lee, Altinity

Wednesday August 27, 2025 11:00 - 11:40 CEST

G109

In this talk, Joshua will share his insights and experiences with OpenTelemetry, an open-source project that offers protocols, APIs, and SDKs for collecting metrics, traces, and logs from applications and services. He will cover the comprehensive toolkit provided by the OpenTelemetry community, including language SDKs, the Collector, and the OTLP formats for metrics, traces, and logs.

He will demonstrate how to instrument and monitor a microservices application running on a Kubernetes cluster, utilizing the full potential of OpenTelemetry. Attendees will learn how to use powerful open-source tools like Jaeger and Prometheus to effectively analyze telemetry signals from their applications.

By the end of this session, attendees will have a solid understanding of how to implement OpenTelemetry in their projects, enhancing their debugging and observability practices. Join us as we delve into the world of OpenTelemetry, unlocking the capabilities of this powerful technology for your development needs.

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 →

Wednesday August 27, 2025 11:00 - 11:40 CEST
G109

Open Source 101

Audience Experience Level Any

11:55 CEST

When Foundation Models Go Open: Unlocking the Promise From Infrastructure To Impact in Health - Elham Dolatabadi, York University

Wednesday August 27, 2025 11:55 - 12:35 CEST

G109

As foundation models become increasingly central to health applications, the open-source community plays a vital role, not only in democratizing access to data and models, but also in driving safe, reproducible, and equitable innovation. In this talk, I will explore the rapidly growing ecosystem of open-source foundation models, with a particular focus on healthcare, where governance, fairness, and privacy are essential.

I will share lessons learned from our team's experience developing and releasing several open-source resources, including datasets, training pipelines, and evaluation frameworks designed to support advanced AI and multimodal learning in health. These tools enable rapid prototyping, benchmarking, and reproducible experimentation across vision-language and other multimodal health tasks.

This session offers a hands-on perspective for researchers and developers looking to engage with open foundation model efforts. Whether you're releasing models, curating datasets, or contributing to tooling, you'll gain insights into best practices for documentation, data quality assurance, and aligning model development with ethical and privacy principles in health AI.

Speakers

Elham Dolatabadi

Assistant Professor/Scientist, York University

Elham Dolatabadi, PhD, is an Assistant Professor and early-career researcher at York University. She as an emerging leader in machine learning (ML) for health, an affiliated faculty member at the Vector Institute. Her contributions to date have advanced the development of advanced... Read More →

Wednesday August 27, 2025 11:55 - 12:35 CEST
G109

Open Source 101

Audience Experience Level Any

14:10 CEST

Why We Needed an Open Source AI Definition Now - Stefano Maffulli, Open Source Initiative

Wednesday August 27, 2025 14:10 - 14:50 CEST

G109

Why did we need to define Open Source AI, how did the OSI go about it, what conclusions did they reach, what's next, and how is the OSI's Open Source AI definition (OSAID) already helping to combat openwashing?

In this Session, OSI's executive director, Stefano Maffulli will present the process that led to the OSAID, and OSI EU Policy Analyst Jordan Maris will explain how the OSAID is vital to combatting openwashing in Europe and beyond.

Speakers

Stefano Maffulli

Executive Director, Open Source Initiative

Stefano is the Executive Director of the Open Source Initiative, he joined OSI in 2021 after decades of open source advocacy, both as a contributor and leader. He co-founded and led the Italian chapter of Free Software Foundation Europe from 2001 to 2007, structured the developer... Read More →

Wednesday August 27, 2025 14:10 - 14:50 CEST
G109

Open Source 101

Audience Experience Level Any

16:20 CEST

Demystifying Containers and Container Images - Dan Čermák, SUSE

Wednesday August 27, 2025 16:20 - 17:00 CEST

G109

Containers have become a cornerstone of modern IT infrastructure, yet, despite their widespread adoption, many technical fundamentals behind the container ecosystem are not widely known and lead to confusion and open questions like:

- Are containers just lightweight virtual machines?

- What are the layers of a container image?

- Are containers inherently more secure than workloads running on bare metal?

This session aims to demystify the underlying concepts behind containers and container images. We will trace the historical and technical evolution, beginning with foundational features like namespaces and cgroups, and how they are employed by container engines like Docker and Podman. Then we will provide an overview of how container images are constructed and how containers are launched from container images by Docker and Podman.

Whether you are new to containerization or looking to solidify your foundational knowledge, this talk will provide you with the necessary groundwork to successfully navigate the containerization landscape.

Speakers

Dan Čermák

Senior Full Stack Web Developer, SUSE

Dan is working as a Senior Web developer, building container images, creating developer tools and sometimes works on QA at SUSE, which he joined after working as an embedded firmware developer. Originally he started out as a theoretical astrophysicist, but after becoming a contributor... Read More →

Wednesday August 27, 2025 16:20 - 17:00 CEST
G109

Open Source 101

Audience Experience Level Advanced