AWS Trusted Advisor adds a new operational excellence check category and integrates with AWS Config to deliver 64 new best practice checks across all categories. Trusted Advisor continuously evaluates your AWS environment using best practice checks in the categories of cost optimization, performance, resilience, security, operational excellence, and service limits, and recommends actions to remediate any deviations from best practices. The new best practice checks are powered by AWS Config managed rules which are predefined, customizable rules used to evaluate the compliance state of your AWS resources.
Source:: Amazon AWS