How would you answer an interview scenario involving AWS IAM in AWS?

For an interview scenario involving AWS IAM, I would first clarify the business goal, scale, constraints, and the failure or quality attribute the interviewer wants to explore. AWS Identity and Access Management controls identities, roles, policies, and permissions across AWS. For production, prefer roles and temporary credentials, use least-privilege policies, separate human and workload access, enable MFA, review access with IAM Access Analyzer, and apply permission boundaries or SCPs when appropriate. I would then explain the main alternatives and tradeoffs, identify likely failure modes, and describe how I would validate the solution through testing, observability, security controls, and recovery or rollback planning.