DevOps Dictionary

Argo CD is a GitOps continuous delivery controller for Kubernetes that deploys and manages applications by treating Git as the source of truth for the desired state. You declare app configuration in Git (for example, manifests or Helm/Kustomize output), and Argo CD continuously compares that desired state to what is actually running in the cluster, then syncs changes and reports drift when the cluster diverges due to manual edits, failed rollouts, or unexpected mutations. With Argo CD, teams get repeatable, auditable deployments and self-healing reconciliation driven by pull requests and version history; without it, releases often depend on imperative commands and one-off fixes that are harder to track and can leave environments inconsistent. This gap exists because Kubernetes is dynamic, and without a controller enforcing the declared state, small changes accumulate into configuration drift.