This book is for DevOps engineers and developers working in cross-functional teams or operations and would now switch to IAC to manage complex infrastructures. The basic idea of Infrastructure as code (IAC) is that IT infrastructure is treated as software. IT infrastructure provisioning process is built, treated, and managed through code, rather than scripting or manual process. That means code is used to automate the process of setting up and configuring a virtual machine, container, and so on. Did you always wanted to define your IT infrastructure problems using code? If yes, you have come to the right place! Here we show you how to use the best tools of the infrastructure-as-code ecosystem with code hardened in production. We'll deploy repeatable infrastructures and services on Amazon Web Services, OpenStack, Google Cloud or Digital Ocean using Terraform and Ansible. We'll manipulate the best bits from Cloud-Init and its derivatives (like the CoreOS flavor) to easily reproduce initial machines bootstrapping process. We'll discover how to simulate consistent environments locally or remotely using Vagrant. Now we have a fully automated and working base infrastructure knowledge, we'll automate many system tasks, using Chef or Puppet. We'll build various Docker containers for those environments and orchestrate them with tools like docker-compose, with a focus on automated cloud infrastructures services.Throughout the book we'll learn the best tips working on infrastructure with code and teams. This Infrastructure-as-Code cookbook will help you use the right tool for your job, and get you started on all essential techniques.