Why it matters

GitOps changes how K8s deployments work. Understanding Argo CD enables adoption.

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The architecture

Git repo: manifests + Helm charts + Kustomize.

Argo controllers: watch Git, compare to cluster, apply differences.

GitOps loopGit desired stateK8s manifestsArgo watchesreconciles clusterCluster actualmatches GitCluster desired state lives in Git; rollback = git revert
GitOps pattern.
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How it works end to end

Applications: Argo resource pointing to Git path + cluster + namespace.

Sync policies: manual or auto. Prune orphaned resources.

Rollback: git revert; Argo picks it up.

Multi-cluster: one Argo can manage many clusters.