Kargo in Action

Kargo is an Kubernetes-native application lifecycle orchestration tool that works alongside Argo CD to promote software builds, automatically moving software artifacts, container images, Helm chart versions, or Git commits from development to staging to production. While GitOps tools like Argo CD handle the "how" of deployment by reconciling the desired state, Kargo handles the "when" and the "where." Kargo in Action shows you how to turn this continuous promotion of your software into a declarative, auditable discipline on Kubernetes.

In this authoritative book, written by the Akuity engineers who built Kargo, you'll follow a mid-sized e-commerce company as it grows a single-service pipeline into a platform supporting a dozen product teams and forty services. Each chapter builds on the last: install Kargo alongside Argo CD and run your first end-to-end promotion; then design Stage graphs for parallel pre-prod environments, release candidates, soak windows, and emergency hotfix paths. Configure Warehouses to watch container registries, Helm repositories, and Git for new artifacts, and use version constraints to control exactly what is eligible to move. Automate low-risk promotions, gate production behind PR approvals and AnalysisTemplates, and roll back cleanly when a release goes sideways.

Authors Ken Cochrane, Jesse Suen, and Kent Rancourt explore per-Project namespaces and RBAC, coordinated multi-service promotion where your API and frontend must advance together, and the audit evidence SOC 2 reviewers actually ask for. Two chapters on Kargo Enterprise cover change management with Jira and ServiceNow, promotion event routing, promoting OpenTofu/HCL infrastructure alongside application code, and building custom promotion steps, including a complete risk-assessment gate, for when the built-ins aren't enough. A continuous-promotion maturity model closes the book, giving you a concrete way to assess where your organization is and what to tackle next.