AWS DevOps, Terraform & Kubernetes — field notes.

Straight comparisons and guides from 16+ years shipping production AWS.

• Terraform vs CloudFormation (2026)
  Terraform vs CloudFormation compared for AWS in 2026 — multi-cloud, modules, state, drift, ecosystem and when each wins, from a CISA + AWS Solutions Architect Professional.
• EKS vs ECS (2026)
  Amazon EKS vs ECS compared for 2026 — control, portability, operational overhead, cost and when each wins, from a CISA + AWS Solutions Architect Professional.
• GitHub Actions vs GitLab CI vs Jenkins
  GitHub Actions vs GitLab CI vs Jenkins compared for 2026 — hosting, maintenance, security, scale and when each wins for AWS CI/CD, by a CISA + AWS Solutions Architect Professional.
• ArgoCD vs Flux (2026)
  ArgoCD vs Flux compared for 2026 — UI, multi-tenancy, footprint, progressive delivery and when each wins for Kubernetes GitOps, by a CISA + AWS Solutions Architect Professional.