IAM Policy Evaluation: DENY vs ALLOW, Boundaries, and Cross-Account Roles
Master AWS IAM policy evaluation by building users, groups, and roles, then testing explicit DENY overrides, permission boundaries, and cross-account role assumption with external IDs.
Lab Overview
Understand how AWS evaluates IAM policies by creating real resources and observing the results first-hand.
You'll learn to:
- Create IAM users, groups, and attach managed policies
- Prove that an explicit DENY always overrides any ALLOW
- Use permission boundaries to cap the effective permissions of a role
- Assume a role that requires an external ID for cross-account trust
Key Resources:
What You'll Learn
Create and manage IAM users, groups, and policies using the AWS CLI
Demonstrate that an explicit DENY always overrides an ALLOW in IAM policy evaluation
Apply permission boundaries to limit the effective permissions of an IAM role
Assume an IAM role using an external ID for cross-account trust
Prerequisites
Basic AWS Console and CLI familiarity
Understanding of JSON syntax
Technologies Covered
Part of a Course
This lab is part of the AWS Solutions Architect Associate (SAA-C03) course
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