I have published an InfoQ news post about AWS's expansion of CloudTrail support across its entire service portfolio:
Amazon Web Services (AWS) has considerably increased the number of services supported by AWS CloudTrail to cover the majority of the extensive AWS service portfolio. This now includes most compute and networking and all deployment and management services, thereby providing comprehensive end to end auditing of almost any changes to customer’s infrastructure.
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Continue reading the full post in AWS CloudTrail Expands Auditing of API Calls.