7-9 October, 2026 Prague, Czechia View More Details & Registration Important Note:Timing of sessions and room locations are 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 2026 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.
Sign up or log in to add sessions to your schedule and sync them to your phone or calendar.
YAML turned 25 this year. It is essential to Kubernetes, Docker, Ansible, CI pipelines, and config files for everything in between. That ubiquity is both a gift and a curse: every change risks breaking something, somewhere, silently. So how do you grow a data language that a billion files depend on without risk of catastrophe?
Ingy döt Net helped invent YAML and he now maintains the YAML Specification and The YAML Family (libyaml, go-yaml, PyYAML, YAMLStar, YAMLScript etc). In this talk he'll show how he plans to grow YAML by extension: a plugin system that can deeply affect YAML behavior in completely configurable ways. Plugin APIs include schema association, tab indent, standard functions, comment support include i18n. This is being delivered first to go-yaml with the rest of the Family to follow. The work and its real world feedback will guide future changes to the specification.
Ingy döt Net is one of the original inventors of the YAML data language, and its primary maintainer. He is also the active maintainer of go-yaml, the YAML framework trusted by Kubernetes and much of its ecosystem,