AWS CloudTrail
AWS CloudTrail is a service that enables governance, compliance, operational auditing, and risk auditing of your AWS account. It logs, continuously monitors, and retains account activity related to actions across your AWS infrastructure, providing a history of AWS API calls for your account, including who made the request, the services used, the actions performed, and the parameters for the actions. This helps in tracking changes to resources and troubleshooting operational issues.
Developers should learn and use AWS CloudTrail when they need to ensure security and compliance in AWS environments, such as for auditing API usage, detecting unauthorized access, or investigating incidents. It is essential for use cases like monitoring changes to IAM policies, tracking resource modifications (e.g., EC2 instances or S3 buckets), and meeting regulatory requirements (e.g., HIPAA or GDPR) by providing detailed logs of all account activities.