CNCF Hosted Projects (Standards Steward)

CNCF stewards an open-source project portfolio whose APIs underpin much of modern cloud infrastructure - Kubernetes API, OpenTelemetry, CloudEvents, gRPC, CNI, CSI, OCI image and runtime specs, Prometheus exposition format, etcd, Envoy xDS, and many more. Each project owns its own API specs and contracts; CNCF provides the governance and home for these cloud-native standards.