The Kubernetes in-tree storage plugin to Container Storage Interface (CSI) migration infrastructure is now beta in Kubernetes v1.17. CSI migration was introduced as alpha in Kubernetes v1.14. Kubernetes features are generally introduced as alpha and moved to beta (and eventually to stable/GA) over subsequent Kubernetes releases. This process allows Kubernetes developers to get feedback, discover and fix issues, iterate on the designs, and deliver high quality, production grade features.