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How do you design an AWS IAM role hierarchy based on the Principle of Least Privilege?

AWS & GCP IAM Security · 2 saved versions

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Version 1 (Edit)

Edited by Rahul Sharma · Aug 23, 2026 6:09 PM

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How do you design an AWS IAM role hierarchy based on the Principle of Least Privilege?

Summary snapshot
Eliminating wildcard `*` permissions, using ABAC tag matching, and boundary policies.
Content snapshot
### Least Privilege Policy Rules 1. **Never use wildcard permissions**: Restrict `s3:*` or `ec2:*` to specific required actions (`s3:GetObject`). 2. **Use Permission Boundaries**: Set maximum allowable permissions for developer role creation. 3. **Attribute-Based Access Control (ABAC)**: Grant access based on resource tags (`environment = production`).
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https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_boundaries.html

Version 1 (Original Post)

Published by Rahul Sharma · Aug 9, 2026 5:37 AM

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Original Title

How do you design an AWS IAM role hierarchy based on the Principle of Least Privilege?

Original Summary
Eliminating wildcard `*` permissions, using ABAC tag matching, and boundary policies.
Original Content
### Least Privilege Policy Rules 1. **Never use wildcard permissions**: Restrict `s3:*` or `ec2:*` to specific required actions (`s3:GetObject`). 2. **Use Permission Boundaries**: Set maximum allowable permissions for developer role creation. 3. **Attribute-Based Access Control (ABAC)**: Grant access based on resource tags (`environment = production`).
Original Sources

https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_boundaries.html