CI/CD Platform Engineering

A book-shaped table of contents for CI/CD platform engineering: pipeline foundations, build/artifact/delivery platforms, GitHub Actions end to end (workflow mechanics through enterprise governance), Argo Workflows, Tekton, Jenkins, release engineering, platform security, observability, reliability, enterprise governance, and MAANG interview preparation — cross-linking existing tech/kubernetes/platform-engineering-fundamentals/system-design notes instead of duplicating them.

8 — Matrix Builds

Explains matrix strategy fan-out, dynamic matrices computed at runtime, include/exclude overrides, and common OS and language matrix patterns.

9 — Workflow Outputs

Covers job outputs, step outputs, and passing data between jobs and reusable workflows without relying on shared filesystem state.

11 — Composite Actions

Compares composite actions, JavaScript actions, and Docker actions as ways to package and publish reusable steps to the Marketplace.

10 — Reusable Workflows

Covers workflow_call, typed inputs/outputs/secrets, and versioning and best-practice conventions for DRY, org-shared CI, grounded in this repo's own reusable Docker, .NET, Python, and Terraform workflows.