A plain-English guide to the promotion layer your CI/CD has been missing -- without the GitOps cult pamphlet
About this guide: I wrote this for engineers who already use ArgoCD (or Flux), already push images to ECR via GitHub Actions, and have been quietly gluing the "promote dev -> stage -> prod" part together with bash scripts, manual PRs, and Slack messages that start with "is dev green yet?". Kargo is the missing piece. Most Kargo content is either marketing fluff or YAML walls. This guide is neither.