AWS CloudFormation provides a common language for describing and provisioning infrastructure resources in a cloud environment. It allows users to create whole environments of AWS services using a simple text file, which serves as the single source of truth for the cloud environment. This post aims to help readers understand how to use CloudFormation to launch complex environments with just a few clicks. The key features of CloudFormation include Infrastructure as Code (IaC), Change Sets, Rollback on failure, Stack policies, Nested stacks, Drift detection, and debugging in JSON and scripting languages such as BASH or PowerShell.