AWS CloudFormation Change Set Icon

AWS CloudFormation change sets allow you to preview infrastructure changes before they are applied to your AWS environment. Instead of directly updating a stack, you create a change set, which shows you exactly what resources will be created, updated, or deleted. This lets you review the plan and verify it matches your expectations, preventing accidental modifications to your existing resources. After you review and approve, you execute the change set to apply the modifications. This is useful for avoiding costly mistakes and ensuring a smooth, controlled deployment process.