Check out my top recommendations for working with IAM in celebration of its 10th anniversary, alongside some other great content from other AWS Heroes!
https://aws.amazon.com/blogs/apn/top-recommendations-for-working-with-iam-from-our-aws-heroes-part-3-permissions-boundaries-and-conditions/
https://aws.amazon.com/blogs/apn/top-recommendations-for-working-with-iam-from-our-aws-heroes-part-3-permissions-boundaries-and-conditions/