Part 1. First steps

What is infrastructure as code (IaC), and how do you go about writing it? Part 1 addresses these questions and introduces practices and patterns you can apply to writing IaC. In chapter 1, you’ll learn how IaC works, the problems it solves, and how this book will help you to start using it. Chapter 2 discusses how to write clean code and guidelines for defining IaC in existing systems.

Chapters 3 and 4 dive into patterns for declaring groups of infrastructure, called modules, and their dependencies. You’ll learn patterns for infrastructure modules and how to decouple module dependencies to support changes and minimize blast radius. The chapters also offer guidelines for choosing the most appropriate patterns for your scope and situation.