CloudFormation Drift Detection
AWS CloudFormation supports you in your efforts to implement Infrastructure as Code (IaC). You can use a template to define the desired AWS resource configuration, and then use it to launch a CloudFormation stack. The stack contains the set of resources defined in the template, configured as specified.
When you need to make a change to the configuration, you update the template and use a CloudFormation Change Set to apply the change.
Read more