The future of Kubernetes is in the custom resource definitions (CRDs) and abstractions which we build on top of Kubernetes and make available to users through CRDs. Kubernetes becomes a control plane for abstractions, and it’s the CRDs of these abstractions that developers should focus on. Kubernetes control planes may manage resources inside Kubernetes or even outside Kubernetes as, e.g., Crossplane manages cloud infrastructure.

Source: https://www.eficode.com/