# Ci Cd
All Ci Cd notes →1 — The Evolution of Software Delivery
Traces the path from manual, ticket-driven releases through DevOps automation to platform-engineered software factories that treat delivery itself as a product.
2 — What Is a CI/CD Platform?
Defines a CI/CD platform as a product with its own responsibilities, consumers, shared services, and capability surface, rather than a single pipeline tool.
3 — CI/CD Platform Architecture
Lays out the seven-layer reference architecture — developer, source control, build, artifact, deployment, runtime, and feedback — that the rest of the book is organized around.
4 — Platform Maturity Model
Defines a five-stage maturity curve from manual delivery to autonomous delivery, used throughout the book to benchmark platform capability.
# Internal Developer Platforms
All Internal Developer Platforms notes →1 — The Rise of Internal Developer Platforms
Traces why IDPs emerged from the developer productivity crisis and clarifies how the term relates to, and differs from, platform engineering more broadly.
2 — What Is an Internal Developer Platform?
Defines an IDP by its consumers, providers, and boundaries rather than by any specific tool stack.
3 — Platform Goals
Lays out the goals, self-service, consistency, reliability, security, developer experience, and operational excellence, every later Part in this book is designed against.
4 — Build vs Buy
A decision framework for choosing between a custom-built platform, a commercial IDP product, and composing one from the open-source ecosystem.