Early boot provisioning systems aim to enable automated, declarative, immutable patterns for Linux systems. In this talk, I'll discuss the CoreOS Ignition system and illustrate how it works and addresses real-world use cases on bare-metal, cloud providers, and hypervisors. I'll share experiences using and integrating early provisioning and highlight new challenges for contributors to explore. With Ignition shipping in several Linux distributions soon, early boot provisioning shows promise and potential for the future.