As more enterprises migrate to cloud native environments like Kubernetes and require scalable ways to define and enforce policy in Kubernetes, RBAC alone presents some limitations. Gatekeeper is an OSS project to integrate Open Policy Agent (OPA) in Kubernetes environments. It allows to define policy as Kubernetes objects, making it easier to adopt policy-as-code practices in and sharing reusable templates. In this talk we'll demo Gatekeeper in a real cluster. You’ll learn how to adopt policy-as-code techniques and how you can integrate Gatekeeper with your existing tools.