GitOps flips deployment on its head: instead of pushing changes to a cluster, you describe the desired state in Git and a controller continuously makes reality match it.
Why teams love it
Every change is a reviewed, audited commit. Rollbacks are a git revert. Drift between what is declared and what is running gets corrected automatically.
Getting started
Point ArgoCD at a repository of manifests, define an Application, and watch it sync. Start with one non-critical service to build confidence before moving production workloads.