Back up and restore Kubernetes workloads with Velero, and prove recovery works. Covers Velero on EKS via Flux (IRSA, S3 backup location, EBS snapshots), schedules and retention, what a backup does not contain, restore drills that restore a namespace into an isolated copy and measure recovery time, cross-cluster disaster recovery with a read-only backup location, and GameDay pairing with chaos experiments. Use when asked to "set up cluster backups", "test our restore", "what's our recovery time", "restore a deleted namespace", or "plan DR to another cluster". Breaking things on purpose → /platform-skills:chaos. Upgrade rollback by blue/green → /platform-skills:cluster-upgrade.