Cloud Foundry Summit 2026

Cloud Foundry Summit 2026

21- 22 September | Heidelberg, Germany
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09:00 CEST

Opening Remarks - Chris Clark, Linux Foundation

Monday September 21, 2026 09:00 - 09:10 CEST

Friedrich Hegel 1 + 2

Speakers

Chris Clark

Senior Program Manager, Linux Foundation

Monday September 21, 2026 09:00 - 09:10 CEST
Friedrich Hegel 1 + 2

Session Presentation

09:10 CEST

CF API V2 - The Endgame - Stephan Merker, SAP SE

Monday September 21, 2026 09:10 - 09:20 CEST

Friedrich Hegel 1 + 2

The clock is ticking. CF API v2 has been deprecated since 2021, and with Phase 3 of RFC-0032 on the horizon — the permanent removal of v2 — there is no more runway for "we'll deal with this later."

In this talk, I'll walk through where we stand in the three-phase CF API v2 end-of-life plan: what has already shipped, the state of v2 usage across CFF community projects, and the concrete dates operators and platform teams need to plan around.

From there, I'll focus on what you can do right now. I'll cover the tooling available for foundation operators to detect and manage remaining CF API v2 traffic — so you can identify stragglers before the removal catches your users off guard — and share the migration signals we watched at SAP.

The talk closes with real lessons from SAP's own deprecation experience: which integrations surprised us, what a v2-to-v3 migration looks like in practice, and what we wish we had known earlier.

Speakers

Stephan Merker

Development Expert, SAP SE

Stephan works at SAP and has been active in the Cloud Foundry community for the past 11+ years. He is a tech lead of one of the teams responsible for operating some of the biggest Cloud Foundry deployments world-wide. Stephan is a member of the Cloud Foundry Technical Oversight Committee... Read More →

Monday September 21, 2026 09:10 - 09:20 CEST
Friedrich Hegel 1 + 2

Session Presentation

09:20 CEST

App Runtime Deployments Working Group Update - Jochen Ehret, SAP SE

Monday September 21, 2026 09:20 - 09:30 CEST

Friedrich Hegel 1 + 2

The App Runtime Deployments (ARD) Working Group provides a reference Cloud Foundry deployment that can be consumed by CF community users, contributors, and commercial vendors. The CF Runtime can be installed, validated and operated on different infrastructures with different features enabled.

Here is a summary of what the working group has achieved since beginning of 2025.

One major milestone was the migration from the Jammy to the Noble release, keeping CF deployments on a current and supported Ubuntu base. The migration to Raccoon is just about to start, as soon as a stemcell release is available. The Kind Deployment project joined as a new area within the working group — it offers a simple and fast way to run Cloud Foundry locally on Kubernetes using Kind. On the community side, we could welcome two new Reviewers and eight new Approvers!

Speakers

Jochen Ehret

DevOps Engineer, SAP SE

DevOps engineer at SAP SE since 2008.

Monday September 21, 2026 09:20 - 09:30 CEST
Friedrich Hegel 1 + 2

Working Group Update

09:30 CEST

Scaling Pipeline - Fabian Kittel, anynines

Monday September 21, 2026 09:30 - 09:35 CEST

Friedrich Hegel 1 + 2

Abstract:
How do you reduce Cloud Foundry infrastructure costs during idle periods without pain on Monday morning? Especially, sandbox/qa platforms may not be needed in full measure over the weekend or between testing phases. This talk covers the do’s and don’ts of automated scaling.

Outline & Takeaways:
Which components can be easily scaled, and what should be prevented?
What needs to be temporarily manipulated regarding the configuration?
How to safely scale without interruption?

Speakers

Fabian Kittel

DevOps, anynines

-

Monday September 21, 2026 09:30 - 09:35 CEST
Friedrich Hegel 1 + 2

Lighting Talk

09:35 CEST

Cloud Foundry on Kubernetes — a Closer Look - Ralf Pannemans & Pavel Busko, SAP SE

Monday September 21, 2026 09:35 - 10:00 CEST

Friedrich Hegel 1 + 2

`k8s-garden-client` and `k8s-policy-agent` allow existing Cloud Foundry components to run on Kubernetes. In this talk, we will explain how these components work and introduce the ideas behind them.

We will also show how `kind-deployment` leverages this to start a Cloud Foundry environment on your local machine using kind. Beyond local development, the same approach can be used to run full end-to-end and integration tests in CI against a real Cloud Foundry deployment.

Speakers

Ralf Pannemans

Developer, SAP

20 years as developer with SAP

Pavel Busko

CF Core Developer, SAP SE

I have over a decade of experience in software development and SRE. I currently work at SAP on Cloud Foundry Core development, with a focus on bringing Cloud Foundry and Kubernetes closer together.

Monday September 21, 2026 09:35 - 10:00 CEST
Friedrich Hegel 1 + 2

Session Presentation

10:00 CEST

Shaping Our Platform Future: Rabobank’s Shift To OSS Cloud Foundry - Jochem Siegel & René Dollevoet, Rabobank

Monday September 21, 2026 10:00 - 10:25 CEST

Friedrich Hegel 1 + 2

What happens when you move from a commercial Cloud Foundry distribution back to upstream open source?

In this duo talk, Rabobank shares its journey migrating from VMware Tanzu to OSS Cloud Foundry (cf-deployment). We present two complementary perspectives:

The Why (Management):
How rising costs, vendor constraints, and the need for greater platform ownership drove the decision. We’ll discuss financial considerations, risk trade-offs, and the strategic goal of increasing engineering autonomy.

The How (Platform Engineering):
A deep dive into executing the migration: rebuilding the platform using cf-deployment, redesigning operational workflows, handling upgrades, and managing day-2 operations. We'll share practical lessons, pitfalls, and tooling choices.

The Future:
How this move unlocked innovation, improved flexibility, and shaped Rabobank’s platform roadmap.
Attendees will leave with a real-world success story, actionable insights, and confidence to evaluate or pursue their own move to OSS Cloud Foundry.

Speakers

Jochem Siegel

Senior Engineering Manager/Chapter Lead/Agile Specialist, Rabobank

Experienced Software Development Manager with a track record in large-scale IT environments. As Senior Tech Lead at Rabobank, he drives platform excellence and helps engineering teams thrive through strong leadership, agile practices, and a product-first mindset.

René Dollevoet

Platform Engineer, Rabobank

Platform Engineer at Rabobank, part of the team responsible for the bank’s Cloud Foundry platform. He focuses on automation, reliability, observability, and platform operations at scale, enabling development teams to build and run applications efficiently. Passionate about cloud-native... Read More →

Monday September 21, 2026 10:00 - 10:25 CEST
Friedrich Hegel 1 + 2

Session Presentation

10:55 CEST

Cloud Foundry's Journey To ARM64 on AWS Graviton - Sachin Vighe, Amazon Web Services & Kris Nielander, AWS Professional Services

Monday September 21, 2026 10:55 - 11:20 CEST

Friedrich Hegel 1 + 2

Cloud Foundry's open-source platform has been built exclusively for x86_64, leaving operators unable to leverage the cost and performance benefits of ARM64 processors. This technical deep-dive covers migrating the CF stack — BOSH, Diego, Garden-runC, Gorouter, Cloud Controller, UAA, and Loggregator — to AWS Graviton with zero upstream code changes. We will discuss cross-compiling 30 Go-based components, building ARM64 stemcells with BOSH agent integration, native compilation of runC with seccomp on Graviton, and handling Ruby gem installation for Cloud Controller and BOSH Director on aarch64.

Speakers

Sachin Vighe

Senior DevOps/Cloud Architect, Amazon Web Services

With over 20 years of rich and diversified experience in Information Technology, I am recognized for my expertise in leading large-scale digital transformations and implementing cloud solutions. My core competency lies in architecting and designing scalable, resilient, and fault-tolerant... Read More →

Kris Nielander

Sr. Delivery Consultant, AWS Professional Services

Kris Nielander is a Senior Delivery Consultant at AWS Professional Services from the Netherlands. He specializes in cloud security and workload modernisation; supporting customers migrate to AWS Graviton to drive price-performance objectives and lower carbon emissions. Kris previously... Read More →

Monday September 21, 2026 10:55 - 11:20 CEST
Friedrich Hegel 1 + 2

Session Presentation

11:20 CEST

What Is Next With the CF CLI Plugin Infrastructure - Norman Abramovitz, FiveTwenty Inc & Xiujiao Gao, FiveTwenty Inc.

Monday September 21, 2026 11:20 - 11:30 CEST

Friedrich Hegel 1 + 2

The CF CLI plugin infrastructure has not really changed since CF CLI V6. The CAPI V3 forced the real code change. Out of this effort came multiple solutions. For CF CLI V9, we are looking to redo and modernize the plugin interface. This session will present a few solutions as we progress through this process.

Speakers

Norman Abramovitz

Program Manager, FiveTwenty Inc

Norman Abramovitz is currently a Program Director at FiveTwenty Inc. He has decades of computer science experience, mainly in software development. Some of the projects he worked on include secure networking, secure operating systems, relational databases, and medical instrumentation... Read More →

Xiujiao Gao

COO, FiveTwenty Inc.

Dr. Xiujiao Gao is Co-Founder and COO of FiveTwenty Inc., bringing more than 15 years of experience in the CF community. Her platform architect background helps her guide clients through both technical decisions and long-term technology investments. She has led teams in BOSH & CF... Read More →

Monday September 21, 2026 11:20 - 11:30 CEST
Friedrich Hegel 1 + 2

Working Group Update

11:30 CEST

Clearing the Fog: Replacing a Critical Cloud Foundry Dependency Without Breaking Production - Katharina Przybill & Serdar Özer, SAP SE

Monday September 21, 2026 11:30 - 11:40 CEST

Friedrich Hegel 1 + 2

Replacing a core dependency in Cloud Foundry sounds straightforward, until you realize it sits at the center of app pushes, staging, and blobstore operations.

For years, Cloud Controller relied on the fog libraries to interact with blobstores. And like real fog, it worked until clarity mattered. Beneath the surface, it had become a liability: unmaintained dependencies, custom forks, and end-of-life SDKs blocking upgrades. What looked stable was becoming fragile.

Attempts to replace it led nowhere, until a casual conversation after CF Day North America 2025 sparked a new idea: what if we took inspiration from how BOSH handles blobstores? The answer wasn’t another library, but a different approach.

That idea evolved through community collaboration, from a proof of concept to an RFC and ultimately storage-cli, enabling a safe migration path.

In this talk, we share what it took to make that shift in production, what changed in performance and stability.

Attendees will learn how working groups and the community can collaborate to replace deeply embedded dependencies and turn shared ideas into production-safe solutions.

We didn't just replace fog. We cleared it.

Speakers

Katharina Przybill

Developer, SAP SE

Katharina Przybill is an engineer at SAP working on Cloud Foundry, focusing on the CF API and Cloud Controller. She contributes to the evolution and reliability of core platform components, including work on CAPI and related releases, and is an active member of the Cloud Foundry community... Read More →

Serdar Özer

Developer, SAP SE

Serdar Özer is an engineer at SAP working on Cloud Foundry, with a focus on the CF API and Cloud Controller NG. His background spans AI systems, platform engineering, and large-scale backend infrastructure. He contributes to core platform components and is an active participant... Read More →

Monday September 21, 2026 11:30 - 11:40 CEST
Friedrich Hegel 1 + 2

Session Presentation

11:40 CEST

Beyond App Usage Events: Sampling-Based App Memory Metering in CF - Josua Geiger, SAP SE

Monday September 21, 2026 11:40 - 11:45 CEST

Friedrich Hegel 1 + 2

Accurately metering reserved application memory can be essential for billing. Traditionally, Cloud Foundry application memory metering solutions have relied on application usage events.

This session introduces an alternative approach to reserved application memory metering based on periodic sampling rather than application usage events. We will discuss the motivation behind it, explain how the solution works, and highlight the benefits it provides.

Speakers

Josua Geiger

Senior Developer, SAP SE

SAP SE, Senior Developer

Monday September 21, 2026 11:40 - 11:45 CEST
Friedrich Hegel 1 + 2

Lighting Talk

11:45 CEST

Deconstructing CF Push: Rapid Prototyping and V3 API for Beginners - Maurice Brinkmann, Schwarz Digits Cloud GmbH & Co. KG

Monday September 21, 2026 11:45 - 12:10 CEST

Friedrich Hegel 1 + 2

Cloud Foundry makes deploying apps incredibly fast, but what actually happens when typing cf push? In this 25-minute session designed for beginners, Maurice will guide the attendees through the best ways to rapidly prototype and deploy applications. Maurice will showcase the most effective methods to get code running quickly, comparing the standard CF CLI, the visual Stratos UI, and modern CI/CD pipelines like GitHub Actions.

Once the prototypes are live, Maurice will pull back the curtain to demonstrate how all of these different tools ultimately communicate with the exact same Cloud Controller API, which the attendees can easily interact with using cf curl. To truly demystify the platform's magic, Maurice will break down a standard cf push into its individual lifecycle phases (creating the app record, uploading the package, staging with buildpacks, and starting the droplet). Finally, Maurice will show the attendees how to execute and rerun these distinct steps in complete isolation using granular CLI commands and direct API calls, giving them total control over their deployments.

Speakers

Maurice Brinkmann

Product Owner STACKIT Cloud Foundry, Schwarz Digits Cloud GmbH & Co. KG

Maurice Brinkmann is the Product Owner for STACKIT Cloud Foundry at Schwarz Digits Cloud, where he has been shaping cloud solutions since 2021. A long-time community member, Maurice has been "cf pushing" apps and attending CF conferences for over a decade. He thrives on driving challenging... Read More →

Monday September 21, 2026 11:45 - 12:10 CEST
Friedrich Hegel 1 + 2

Session Presentation

12:10 CEST

Making and Maintaining the Case To Stay on Cloud Foundry - Michael Coté, Tanzu

Monday September 21, 2026 12:10 - 12:35 CEST

Friedrich Hegel 1 + 2

Each year I encounter the same question: how do we convince people to keep using Cloud Foundry? The Cloud Foundry platforms have been running fine for a decade or more, the application developers are happy, and yet there is a constant pull to new platforms. Let's talk about how we can show people that Cloud Foundry has long since solved their platform needs, manage the ongoing internal community marketing, and show the organization that Cloud Foundry is, indeed, worth sticking with. In this talk, I'll go over what has worked and not worked in our community to accomplish these goals.

Speakers

Michael Coté

Senior Member of Technical Staff, Tanzu

Michael Coté studies how large organizations improve how they build software to run and grow their business. His books Changing Mindsets, Monolithic Transformation, and The Business Bottleneck cover these topics. He’s been an industry analyst at RedMonk and 451 Research, done corporate... Read More →

Monday September 21, 2026 12:10 - 12:35 CEST
Friedrich Hegel 1 + 2

Session Presentation

13:50 CEST

App Runtime Interfaces Working Group Update - Stephan Merker, SAP SE

Monday September 21, 2026 13:50 - 14:00 CEST

Friedrich Hegel 1 + 2

This session presents new and exciting features brought to Cloud Foundry by the App Runtime Interfaces working group. The working group covers Cloud Controller, CF CLI and clients, Buildpacks, Autoscaler and MultiApps.

You will hear about CAPI performance improvements, service binding credential rotation, the next cflinuxfs5 stack with buildpacks and more. Finally, I will give an outlook about the upcoming planned features.

Speakers

Stephan Merker

Development Expert, SAP SE

Stephan works at SAP and has been active in the Cloud Foundry community for the past 11+ years. He is a tech lead of one of the teams responsible for operating some of the biggest Cloud Foundry deployments world-wide. Stephan is a member of the Cloud Foundry Technical Oversight Committee... Read More →

Monday September 21, 2026 13:50 - 14:00 CEST
Friedrich Hegel 1 + 2

Working Group Update

14:00 CEST

How To Explain Cloud Foundry To Your Kids (and Other Non-Techies) - Philipp Thun, SAP SE

Monday September 21, 2026 14:00 - 14:10 CEST

Friedrich Hegel 1 + 2

After 11 years working on Cloud Foundry, I still struggle to explain what I do. When meeting new people, I mumble something about "cloud platforms" and watch eyes glaze over. With my own kids (9 and 11), I haven't even tried.

The problem is that "what do you do?" has many layers. Saying "I work at SAP" doesn't explain anything. So you try "I work on a cloud platform" - blank stares. You add "it's open source" - more confusion. You attempt "it helps developers run their apps" - but what's an app? Each answer opens more questions, and before you know it, you've lost your audience.

This talk is my attempt to fix that. We'll explore analogies to explain: What is "the cloud" and what is a cloud platform? What do developers do and why do they need such a platform? Why would a company like SAP use this - and why build it together with others as open source?

This is not a technical introduction to Cloud Foundry - we have those. This is about the social challenge of communicating your work to people who will never touch a terminal. You'll leave with concrete stories you can use - whether explaining your job to your kids, your parents, or the curious stranger next to you on the bus.

Speakers

Philipp Thun

Software Development Expert, SAP SE

Philipp Thun is a Software Development Expert at SAP SE, where he has been working since 2003. Since 2015, he has been actively involved in Cloud Foundry. He is an approver in the App Runtime Interfaces and App Runtime Deployment working groups, and a top committer to Cloud Controller... Read More →

Monday September 21, 2026 14:00 - 14:10 CEST
Friedrich Hegel 1 + 2

Session Presentation

14:10 CEST

More Than a Platform: A Song for Cloud Foundry - Xiujiao Gao, FiveTwenty Inc.

Monday September 21, 2026 14:10 - 14:15 CEST

Friedrich Hegel 1 + 2

Over the years, Cloud Foundry has been more than just a platform to me. It has shaped how I think about developer experience, platform engineering, operational excellence, organizational culture, business strategy, and the relationship between developers and operators.

Like many people in this community, I have spent countless hours building, migrating, operating, upgrading, troubleshooting, and advocating for CF. Through those experiences, I developed a deep appreciation for the values behind the platform: simplicity, automation, reliability, and enabling developers to focus on delivering value.

This lightning talk is a personal project and a creative experiment. Rather than presenting architecture diagrams or technical deep dives, I will share an original song inspired by my experiences with Cloud Foundry. The lyrics celebrate the people, components, and ideas that make Cloud Foundry special: from BOSH and Diego to Buildpacks, UAA, and Genesis, and most importantly, the philosophy that great platforms should make complexity disappear.

This is Cloud Foundry through my eyes: not just as technology, but as a community, a culture, and a philosophy that continues to inspire me.

Speakers

Xiujiao Gao

COO, FiveTwenty Inc.

Dr. Xiujiao Gao is Co-Founder and COO of FiveTwenty Inc., bringing more than 15 years of experience in the CF community. Her platform architect background helps her guide clients through both technical decisions and long-term technology investments. She has led teams in BOSH & CF... Read More →

Monday September 21, 2026 14:10 - 14:15 CEST
Friedrich Hegel 1 + 2

Lighting Talk

14:15 CEST

Your Prompts, Your Platform: GPU Workloads in Cloud Foundry - Johannes Haass & Pascal Zimmermann, SAP

Monday September 21, 2026 14:15 - 14:40 CEST

Friedrich Hegel 1 + 2

AI workloads usually leave the platform. A prompt goes out to OpenAI or Anthropic, an answer comes back. That works for most cases, but not all of them: sensitive data that can't leave the building, token bills that grow faster than the value, private clouds with no path to the public internet. And plenty of GPU work isn't even chat-shaped, think local inference, embeddings, image and video processing.

This isn't about replacing the big AI providers. It's about the workloads that belong on the platform you already run.

Kubernetes solved this years ago. Cloud Foundry has stayed CPU-only. So we wondered what it would actually take to change that, and started building.

The honest answer is: a lot. GPU support reaches into the BOSH stemcell, the NVIDIA driver and Container Device Interface, garden-runc and the OCI spec, Diego's auctioneer and cell rep, the CAPI process model, and finally the CLI and app manifest. Almost every layer of CF has something to say about it.

This talk walks through what we built, what surprised us, and the questions we still don't have answers to.

Speakers

Johannes Haass

Software Engineer, SAP

Johannes is an experienced software engineer with 11+ years at SAP and 6+ years in Cloud Foundry. He actively contributes to Cloud Controller and participates in the ARI working group. Outside work, he enjoys photography and bouldering.

Pascal Zimmermann

Software Engineer, SAP

- Lecture at the University since 2020 (Multiple tech talks to different audience and mostly related to databases and software development)
- Internal tech talks on various topics as part of the software development and cloud engineering

Monday September 21, 2026 14:15 - 14:40 CEST
Friedrich Hegel 1 + 2

Session Presentation

14:40 CEST

Building a Trusted RAG Knowledge Layer for Cloud Foundry and BOSH Operations - Haochen Hu & Wayne E Seguin, FiveTwenty Inc

Monday September 21, 2026 14:40 - 15:05 CEST

Friedrich Hegel 1 + 2

Cloud Foundry and BOSH operators depend on a large body of operational knowledge: cf-deployment release notes, BOSH releases, component repositories, upgrade guides, job specs, CVEs, GitHub issues, historical incidents, runbooks, and environment-specific customizations. During upgrades and incidents, the hard part is rarely finding one document; it is knowing which sources are current, trustworthy, relevant to the deployed version, and safe to act on.
This talk shows how to design a Retrieval-Augmented Generation knowledge layer specifically for CF and BOSH operations. We will cover what to index, how to attach useful metadata such as component, release version, stemcell, foundation, date, source type, and trust level, and how to combine keyword and vector retrieval for version-sensitive questions. We will also discuss guardrails for common failure modes, including stale release notes, duplicated docs, missing environment context, and hallucinated security or upgrade claims.
Attendees will leave with a practical reference architecture for making CF/BOSH knowledge more searchable, reusable, auditable, and useful during upgrade planning, CVE analysis, and incident investigation.

Speakers

Haochen Hu

Senior Cloud Engineer, FiveTwenty Inc

Dr. Haochen Hu obtained PhD in the field of mobile cloud computing, with a robust background in cutting-edge research, cloud computing, AI, wireless sensing, and software development.

Wayne E Seguin

CEO, FiveTwenty Inc

Wayne is always working to build a healthy future for and values healthy respectful relationships most. Creator of RVM & long time OSS contributor. Personally committed to developer enablement & education using cloud platforms & distributed systems.

Monday September 21, 2026 14:40 - 15:05 CEST
Friedrich Hegel 1 + 2

Session Presentation

15:35 CEST

Open Discussion - How Can We Market Cloud Foundry Better?

Monday September 21, 2026 15:35 - 17:00 CEST

Friedrich Hegel 1 + 2

Monday September 21, 2026 15:35 - 17:00 CEST
Friedrich Hegel 1 + 2

Open Discussion