Building a Production-Grade 3-Tier AWS Architecture with Terraform: Design Decisions, Trade-offs, and Lessons Learned (opens in new tab)

Repo: — full Terraform source, module docs, and architecture diagram. When I set out to build this project, I didn't want another "deploy a VM and call it infrastructure" tutorial repo. I wanted something that would force me to think through the same questions a platform team actually argues about: how many subnet tiers do you really need, where do secrets live, how do you let engineers SSH in without handing out keys forever, and what's the cheapest way to stay highly available without going...