Which tool can you use to identify underutilized resources in an AWS account?

AWS Trusted Advisor is a tool that helps users optimize their AWS environment by providing real-time advice on best practices regarding various aspects, including cost optimization, which encompasses identifying underutilized resources. It analyzes your account and looks for opportunities to save money by highlighting resources that are not being fully utilized, such as underused EC2 instances or idle Elastic Load Balancers.

This tool is particularly useful for organizations aiming to manage their cloud resources efficiently and reduce unnecessary expenditures. In contrast, AWS S3 is a storage service, AWS CloudFormation is used for provisioning resources in a repeatable manner using templates, and AWS Lambda is a serverless computing service designed to run code in response to events. None of these services provide the same capability for identifying underutilized resources as AWS Trusted Advisor does.