AWS CloudFormation is an Infrastructure as Code (IaC) service. IaC has emerged as a critical strategy for companies that are making the transformation to a DevOps culture. DevOps and IaC go hand in hand. The practice of storing your infrastructure as code encourages a sharing of responsibilities that facilitates collaboration.

There are many benefits to IaC, some of which are as follows:

• Modeling your infrastructure as code gives you a single source of truth to define the resources that are deployed in your account.
• Once there are no manual steps to create your resources, you can fully automate deployment. You can deploy changes to an existing environment or create a brand new environment from scratch automatically by launching stacks based on your CloudFormation templates.
• Treating your infrastructure as code allows you to apply all the best practices of modern software development to your templates. Use code editors, distributed version control, code reviews, and easy rollbacks as part of your process.