Final answer:
The AWS Well-Architected Tool is a free service that assists in reviewing workload states and aligning them with AWS architectural best practices after a series of questions are answered.
Step-by-step explanation:
The free tool that helps to review the state of your workloads and compares them to the latest AWS architectural best practices after you have answered a series of questions about your workload is the AWS Well-Architected Tool. This tool is designed to help cloud architects build secure, high-performing, resilient, and efficient infrastructure for their applications. Based on the AWS Well-Architected Framework, this tool provides a consistent approach for evaluating systems against the qualities expected of modern cloud-based systems and also offers suggestions for improvement.