(Fedora/CentOS) Atomic Host is an immutable operating system for hosting containers. It's based upon rpm-ostree which is a hybrid packet manager for managing bootable, immutable, versioned filesystem trees from upstream RPM content. This talk gives you a first introduction about what Atomic Host exactly is and how you can use it correspondingly and most important what are the common use cases. After you're familiar with the key concepts, we'll build our very own simple custom OSTree within a quick demo session and learn, how we can integrate it into an Atomic Host-based distribution. To finish this talk, I'll give some insights about the limitations and best practices of Atomic Host and rpm-ostree.