GitOps: ArgoCD, Flux

GitOps makes Git the single source of truth and lets an in-cluster operator continuously sync the cluster to match it, giving auditable, repeatable, self-healing deployments that manual `kubectl apply` cannot.

ArgoCD is an in-cluster GitOps controller that pulls desired state from Git and continuously syncs the cluster to match, which is safer and more resilient than an external Jenkins pushing changes in with cluster credentials.

GitOps makes Git the single source of truth and an in-cluster controller continuously pulls reality toward it, giving audit, automatic drift correction, and rollback by git revert.