Blog Post: Source & Binary / You should have lots of AWS accounts
category: AWS Serverless
All of the reasons to have lots of AWS accounts boil down to different forms of desirable isolation. As the original form of isolation in AWS, predating IAM entirely, AWS accounts are the most complete form of isolation on offer. And so, thanks to AWS’ legendary commitment to their public APIs, AWS accounts became the foundation of AWS Organizations. They remain the best way to achieve maximum isolation even today. AWS accounts can create strong security boundaries, reduce the blast radius of changes, improve your control over AWS service limits, avoid high-stakes tagging requirements, and more.
Link (blog post):
https://src-bin.com/you-should-have-lots-of-aws-accounts/