CloudFormation Stack Drift Detection Check

A config rule that checks whether an AWS CloudFormation stack's actual configuration differs, or has drifted, from it's expected configuration. A stack is considered to have drifted if one or more of its resources differ from their expected configuration. The rule and the stack are COMPLIANT when the stack drift status is IN_SYNC. The rule and the stack are NON_COMPLIANT when the stack drift status is DRIFTED.