This document summarizes the book "Pipeline as Code" which teaches readers how to automate their development pipeline using infrastructure as code tools like Packer and Terraform. It explains how to build a CI/CD pipeline with modern cloud services and tools like Jenkins to continuously deliver software. The book provides best practices for implementing code-driven CI/CD systems to deploy applications faster and with fewer bugs. Readers will learn how to deploy a self-healing Jenkins cluster on a cloud platform and take advantage of the new automated pipeline.