Docker gets you containers; Kubernetes gets you a platform–but only if your deploy story is as disciplined as your Dockerfile. We pair GitHub Actions for build and test with ArgoCD for cluster reconciliation so what merges to main is what runs in the cluster, with a clear audit trail.
Terraform is how we keep environments comparable. Modules for VPC, EKS, IAM, and observability stacks are versioned like application code. Drift is not a surprise–it is a scheduled review item, not an incident discovered at 2 a.m.
Zero-downtime deploys need more than rolling updates. Readiness probes, graceful shutdown hooks, and database migration strategies are designed together. Helm values separate per-environment config from chart templates so the same artifact promotes cleanly from staging to production.
Monitoring hooks land in the pipeline: Datadog or Prometheus alerts tied to deploy events, automatic rollback thresholds, and runbooks linked from Grafana dashboards. Shipping fast only works when you can see and reverse mistakes quickly.
