[OJFord]

Sorry, I assumed this wasn't author-shared; I wouldn't have phrased it like that if I'd realised, or on a 'Show HN'.

It just struck me as a collection of ways you could split your configuration where none of them is something I would suggest. You could split your frontend/backend or services I guess sure, but then why are you assuming it's in the same repo, and why does that matter anyway, it has nothing to do with Terraform.

Why have dev & prod as different projects, assuming they're supposed to look the same? Use workspaces or different state or terra grunt. Ditto regions; use provider aliases.

If you say Well I'm not assuming they are the same, this is about structuring directories on the basis that they are already isolated Terraform configurations... Ok sure, but why does how you do that matter and what does it have to do with Terraform? It's the same as talking about structuring the directories for their application code isn't it?