AWS CloudTrail is a service that tracks everything happening in your AWS environment. It makes it easier to track activities like unauthorized access, configuration changes, or unusual behavior. It also supports compliance and auditing by maintaining a clear history of activity. 

When we integrate CloudTrail with Event-Driven Ansible, we can automatically respond to these events in real time without manual intervention. This integration turns monitoring into action, helping teams keep their cloud systems secure, reliable, and easier to manage as they scale.