AWS Trusted Advisor

AWS Trusted Advisor is an Amazon Web Services tool that provides real-time guidance to help you optimize your AWS deployments. It acts as a customized cloud expert, inspecting your AWS environment and making specific recommendations to save money, improve performance, or close security gaps.

The service inspects your AWS infrastructure across five distinct pillars: cost optimization, security, fault tolerance, performance, and service limits. By scanning these specific areas, it provides actionable best practices to keep your deployments healthy.

While all AWS customers get access to a core set of Trusted Advisor checks (like service limits and basic security), full access to all checks requires a Business or Enterprise support plan. Upgrading unlocks the complete suite of checks across cost optimization, performance, and fault tolerance.

Yes, Trusted Advisor actively monitors your service limits and fault tolerance, alerting you long before you hit hard capacity caps that could cause downtime. It provides real-time recommendations to ensure your architecture is highly available and resilient against regional failures.