Open Source Summit Europe 2025: Full Schedule

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

The Sched app allows you to build your schedule but is not a substitute for your event registration. You must be registered for Open Source Summit 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.

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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11:20 CEST

The Hypervisor Hierarchy: Why Architecture Matters for Performance, Security, and Flexibility - Cody Zuschlag, Xen Project (Linux Foundation)

Monday August 25, 2025 11:20 - 12:00 CEST

G001-002

Not all hypervisors are created equal. Some claim to be "bare metal" but rely on an underlying OS, while others truly separate hardware from workloads, enhancing security, stability, and performance. This session breaks down the differences between Type 1 and Type 2 hypervisors, why some architectures blur the lines, and how Xen stands apart as a true, independent Type 1 hypervisor. We’ll explore how Xen can run with dom0 or dom0less, offering flexibility for both dynamic and fixed VM environments. We’ll also discuss how Xen’s streamlined, unified ecosystem avoids the fragmentation seen in other virtualization stacks. Attendees will leave with a clear understanding of why hypervisor design matters and how it impacts security, efficiency, and long-term infrastructure choices.

Speakers

Cody Zuschlag

Community Manager, Xen Project (Linux Foundation)

Cody Zuschlag is the Community Manager for the Xen Project and a passionate advocate for open-source solutions. Since 2022, he’s been speaking internationally on full-stack, embedded, and decentralized technologies. Through his work, talks, and teaching, Cody promotes using tech... Read More →

Monday August 25, 2025 11:20 - 12:00 CEST
G001-002

Cloud & Containers

Audience Experience Level Intermediate

13:30 CEST

Mainframes Aren’t Dead, They’re Just Running Kubernetes Now - Josephine Pfeiffer, Red Hat

Monday August 25, 2025 13:30 - 14:10 CEST

G001-002

Mainframes have been declared dead more times than JavaScript frameworks have been invented—but here they are, still running the backbone of global finance, government, and enterprise computing. And now? They’re running Kubernetes too.

This talk dives into the why and how of running Kubernetes on mainframes, from containerization on z/OS to networking, workload orchestration, and real-world use cases. We’ll break down the challenges, the benefits, and whether this is a clever hack or a genuinely viable approach for modern infrastructure. If you think mainframes are relics, think again—because they’re running microservices now.

Speakers

Josephine Pfeiffer

Senior Consultant, Red Hat

Josephine is a consultant specializing in developer productivity and infrastructure. She has worked for enterprises, SMEs, and startups in roles spanning platform engineering, DevOps, Site Reliability Engineering, and technology management.

Monday August 25, 2025 13:30 - 14:10 CEST
G001-002

Cloud & Containers

Audience Experience Level Intermediate

14:25 CEST

Sponsored Session: Freedom to Build: Open Source Foundations for Sovereign Cloud Infrastructure - Orlin Vasilev, SUSE

Monday August 25, 2025 14:25 - 15:05 CEST

G001-002

Cloud-native technologies are reshaping infrastructure strategies, especially as organizations embrace hybrid and multi-cloud models. In this session, we explore how the combination of Multi-Linux environments, Kubernetes, and virtualization forms the backbone of sovereign, cloud-native platforms. As regulatory and supply chain pressures elevate the importance of digital sovereignty, open source solutions—like SUSE-supported projects Rancher, K3s, and Harvester—offer a path and choice to control, agility, and compliance without vendor lock-in. We'll examine how diverse Linux distributions operate within Kubernetes clusters, how virtualization enhances workload isolation and portability, and how cloud-native architectures can be designed to meet sovereignty requirements. Attendees will gain insights into real-world implementations and open standards that are driving the next generation of sovereign cloud infrastructure.

Speakers

Orlin Vasilev

Principal Open Source Technology Advocate, SUSE

Orlin Vasilev is Principal Open Source Technology Advocate and Community Manager for Project Harbor and project K3s as part of the Cloud Native team at SUSE. CNCF Ambassador and driving the biggest Meetup Group in Bulgaria. KCD Sofia organizer, KubeCon CfP review board member and... Read More →

Monday August 25, 2025 14:25 - 15:05 CEST
G001-002

Cloud & Containers

15:35 CEST

Zero-Touch SBOM Generation: Secure Your Build From the Inside Out - Kaushlendra Pratap Singh & Gaurav Mishra, Siemens

Monday August 25, 2025 15:35 - 16:15 CEST

G001-002

In the world of continuous delivery, speed is everything - but security and compliance often lag. Open-source developers and DevOps engineers face a key challenge: how do you ship fast and stay audit-ready?

With SBOMs becoming mandatory under various regulatory Acts, compliance is no longer optional. This talk shows how to proactively integrate open-source tooling into your pipelines—securely, automatically, and at scale.

We’ll discuss how to bring compliance into the early stages of the software development lifecycle—using open-source tools that enable zero-touch, high-quality SBOM generation. Powered by the battle-tested FOSSology toolchain, these solutions integrate seamlessly into your CI/CD pipelines, whether you’re using GitHub Actions or GitLab CI.

It automates:

• Dependency scanning in Python and Node.js projects

• License and copyright detection

• SPDX SBOM generation in JSON, YAML, RDF, or Tag formats

• Seamless CI-native package scanning on every pull request

Lightweight, Docker-based, and already on Docker Hub and GitHub Marketplace, this tool makes compliance and SBOM generation effortless.

Speakers

Kaushlendra Pratap Singh

Research Engineer, Siemens

Kaushlendra Pratap is a Research Professional at Siemens and a passionate advocate for open-source software. With nearly four years of experience in semantic web, license compliance, and machine learning, he has played a key role in contributing to and maintaining tools like FOSSology... Read More →

Gaurav Mishra

Research Engineer, Siemens

Gaurav Mishra, a Research Professional at Siemens, is a passionate advocate for open-source software. Leveraging his seven years of expertise in the domain of semantic web, license compliance and software architectures, he leads the SW360 & FOSSology organizations and drives inno... Read More →

Monday August 25, 2025 15:35 - 16:15 CEST
G001-002

Cloud & Containers

Audience Experience Level Beginner

16:30 CEST

From Chaos To Clarity: Building Observability-First Mindsets in African Engineering Teams - Omolade Akinwumi, Max

Monday August 25, 2025 16:30 - 17:10 CEST

G001-002

In this session, I’ll walk through the journey of introducing observability practices in fast-moving, resource-constrained engineering teams—particularly in Africa, where open-source tooling plays a vital role in production environments. I’ll share the common cultural and technical roadblocks I’ve faced while helping teams shift from reactive firefighting to proactive monitoring and performance tuning.

We'll explore how open-source tools like Prometheus, Grafana, and OpenTelemetry were deployed to bridge observability gaps, how we democratized metrics across dev, infra, and support teams, and what lessons can be applied globally to build resilient systems in under-documented regions. Whether you’re an SRE, DevOps, or developer, this talk will provide insights into how to champion observability where there’s little buy-in and how to scale it organically from the ground up.

Speakers

Omolade Akinwumi

DevOps Engineer, Max

Omolade Akinwumi is a DevOps Engineer passionate about driving observability-first culture within resource-constrained teams. Her work centers around open-source tooling, performance tuning, and empowering teams to move from reactive to proactive operations. As a woman in tech, she’s... Read More →

Monday August 25, 2025 16:30 - 17:10 CEST
G001-002

Cloud & Containers

Audience Experience Level Beginner