Tracing Infrastructure Changes with AWS Provider User Agent header
Failures are a given and everything will eventually fail over time- Werner Vogels, CTO, Amazon.com.
And when an application goes down or an infrastructure change goes wrong, the first question is always What changed and who changed it ? . On a very high level, CloudTrail as a service gives you the view into the API calls which could have lead to that issue you are investigating. But, connecting that back to a specific deployment, commit , user person requires more context.