Explore best practices for writing, testing, and maintaining infrastructure at scale using policy-as-code in CI/CD and Kubernetes cluster runtime in this 29-minute conference talk. Delve into the comparison between these two methods and examine sample use cases highlighting their respective benefits. Gain insights into the current state of open source repositories and Kubernetes manifests found in the wild. Learn how incorporating infrastructure-as-code into software development promotes transparency, immutability, and helps prevent bad configurations upstream. Discover the importance of planning, provisioning, and changing infrastructure in rapid cloud application development.