In this interactive talk we will take a look at the payment service provider migration Stadtwerke Munich undertook for its mobile online payments.
After setting the scene, we will follow the journey of the team responsible for the M-Login payment component, the technical
integration layer between all services connected to the company-wide customer login M-Login and our payment service providers.
We will highlight critical aspects of a live migration of almost half a million users, discuss options and see how the team dealt with
surprises along the way in an agile manner.

The talk is intended as an interactive format presenting a series of real situations in which participants can and should
weigh in with their own ideas and opinions before the actual resolution chosen by the team is presented.

This session is a comprehensive exploration of actions-runner-controller, an open-source Kubernetes operator originally initiated by the community to tackle the challenges of managing and scaling GitHub Actions self-hosted runners. Due to its exceptional popularity, actions-runner-controller was adopted, maintained, and transformed into a supported offering by GitHub. Join us as we delve into the intricacies of its design, development, and release processes. Gain valuable insights into the inner workings of actions-runner-controller, comprehensively understanding its architecture and implementation.

Do you love experimenting with state-of-the-art tech like Kubernetes? But how do you feel with its setup and operations in a secure and stable way? This talk would like to introduce you to Cloud Foundry as a unique Platform as a Service solution, which helps managing cloud-native applications for 12 years now. So it not just has a longer breath than Docker and Kubernetes, it also differentiates itself by being a true Application Platform as a Service and not just a Container Infrastructure as a Service solution. Therefore, it comes with some unique components and mature concepts, which allow DevOps Engineers to quickly develop and operate cloud-native solutions securely within few minutes. Besides that differentiation, this talk will look behind the scenes and enter the world of buildpacks, packages, droplets, additional processes vs. sidecars and how to adapt them in innovative ways to push anything from code over Jupyter nootbook files to just data.

How did I improve the authentication process for millions of users by hundreds of percent? I will talk about our architectural change implementation details, and will teach how we leveraged practical design patterns using Redis, AWS Cloudfront, microservices and observability tools to get top-level loading time performance of our passwordless-based authentication solutionDuring this talk, I will describe a change that had a significant impact on how customers perceive us as their authentication mechanism. Serving major enterprise companies and well-known brands, we must strive for cutting-edge performance. I will discuss practical architectural changes, design patterns, and various cutting-edge technologies, such as Passkeys, WebAuthn and FIDO2. The true value of this talk lies in integrating all these components, allowing you to explore how familiar tools can be combined with theoretical design patterns to create a remarkable architecture.

It's been said that automating oneself out of a job is one of the best qualities of a software engineer. When it comes to building and releasing software that statement becomes more relevant than ever. GitHub is a popular choice for hosting code and since a few years ago offers a native CI/CD solution: GitHub Actions. They are a powerful tool that's worth adding to your development toolbox but getting started might be a bit daunting. In this session we'll cover the basics of working with GitHub Actions workflows and their structure, moving into more advanced topics such as inputs/outputs, job dependencies, job matrices, reusable workflows, composite actions, and secrets.