Which AWS service helps identify underutilized resources?

AWS Trusted Advisor is the service designed to help businesses optimize their AWS infrastructure by providing recommendations based on best practices. One of its key functionalities is to identify underutilized resources, such as EC2 instances that are running but have low CPU or network utilization. By highlighting these underutilized resources, Trusted Advisor enables organizations to make informed decisions about scaling down or terminating services that are not cost-effective.

This not only assists in reducing costs but also improves the overall efficiency of cloud resource management. The insights provided by Trusted Advisor can lead to more strategic resource allocation, helping organizations to better utilize their cloud environments in accordance with their actual demands.

The other services listed do not specifically cater to the identification of underutilized resources. AWS CloudTrail focuses on logging and monitoring account activity, AWS Config tracks resource configurations and relationships, and AWS Inspector is a security assessment service that checks applications for vulnerabilities. These functionalities, while important in their own right, do not address the identification of resources that are not being used efficiently.