OpenChoreo is an open-source internal developer platform that sits on top of Kubernetes clusters to provide higher-level abstractions for developers. It orchestrates CNCF projects to deliver CI/CD, GitOps, observability, and RBAC capabilities. The platform introduces concepts like Organizations, Data Planes, Environments, Projects, Components, and Cells that map domain-driven design principles to Kubernetes resources. It enforces zero-trust security through Cilium network policies, provides built-in API management via Envoy gateways, and includes observability by default. Platform engineers define standards and policies while developers work with simplified abstractions, eliminating the need to manage low-level Kubernetes primitives directly.