5 accounts would be heaven if that could be my environment.

I have almost 40 AWS accounts on my login portal.

Two accounts per product, one for development environments and one for production environments, every new company acquisition has their own accounts, then we have accounts that solely exist to help traverse accounts or host other ops stuff.

Maybe you don’t see issues with everything in one account but my company would.

I don’t really think they’re following current best practices but that’s a political issue that I have no control over, and I think if you went back enough years you’d find that we followed AWS’ advice at the time.