AWS AppConfig now supports AWS CloudTrail data event logging for the StartConfigurationSession and GetLatestConfiguration APIs. By opting in to these data events, AWS AppConfig will log details about every data plane request to AWS CloudTrail. These logs include information such as what IAM identity made the request, when the request was made, what AWS AppConfig resources were associated with the request, and whether request was made by the AWS AppConfig Agent.
Source:: Amazon AWS