What is AWS Trusted Advisor?

AWS Trusted Advisor is an online tool that provides real-time guidance to help you provision resources following AWS best practices. It inspects your AWS environment and makes recommendations for cost optimization, performance, security, fault tolerance, and service limits. Trusted Advisor checks include unused resources, underutilized instances, security vulnerabilities, and service quota limits. Business and Enterprise support plans unlock all Trusted Advisor checks and provide automated actions through EventBridge. It helps identify opportunities to save money, improve system performance, and close security gaps across your AWS infrastructure.