Key points

- AWS has launched the AWS Well-Architected Agent in preview, positioning it as an AI-powered evolution of Trusted Advisor and the Well-Architected Tool.[1]
- It analyzes infrastructure across cost, security, performance, and reliability, then prioritizes recommendations based on business goals and expected impact versus effort.[1]
- It can review Terraform, CloudFormation, and CDK templates, identify gaps, and suggest code changes. Recommendations may include SSM runbooks, CLI scripts, or guided console steps.[1]
- Example: for a reliability goal, it might recommend multi-AZ failover for a database and show possible cost and performance effects before changes are made.[1]
- The agent is available in preview in US East (N. Virginia), US East (Ohio), and US West (Oregon). Workloads can be onboarded from any commercial AWS Region; access requires an AWS Support plan.[1]

Bottom line: It aims to turn Well-Architected reviews into goal-focused recommendations and actionable fixes, including infrastructure-as-code changes.

Sources
[1] https://aws.amazon.com/about-aws/whats-new/2026/10/aws-well-architected-agent — AWS Well-Architected Agent is now available in preview - AWS