Which status represents a failure state in AWS CloudFormation?

Explanations:

ROLLBACK_IN_PROGRESSindicates that the stack is rolling back due to a failure during creation, update, or deletion. This status represents a failure state.

DELETE_IN_PROGRESSindicates that the deletion of the stack is in progress. This is a normal status and does not necessarily indicate a failure.

UPDATE_COMPLETE_CLEANUP_IN_PROGRESSmeans that an update was successful, but cleanup is still in progress. It does not represent a failure state.

REVIEW_IN_PROGRESSindicates that the CloudFormation template is being reviewed and no stack operations have occurred yet. It does not indicate a failure state.