Crossplane

A standalone path through Crossplane, which turns a Kubernetes cluster into a control plane for provisioning and managing cloud infrastructure. Beginner covers the control-plane model, installing Crossplane and a provider, managed resources, and how reconciliation and state work without a state file. Intermediate builds the platform: composite resources and compositions, XRDs and self-service claims, providers/ProviderConfig and credentials, and connection secrets. Advanced goes deep: composition functions, multi-cloud and provider families, policy and RBAC guardrails, and running Crossplane securely in GitOps. Real manifests and kubectl output throughout; each level ends with a self-test feeding a rotating final exam.