State Isolation: Workspaces vs File Layouts - When to Use Each

Day 7 of my Terraform journey focused on one of the most practical Infrastructure as Code questions: how do you separate environments like dev , staging , and production without letting them interfere with each other? Terraform gives two main answers: workspaces file layouts I implemented both, compared both, and came away with a clearer opinion about when each one makes sense. Why State Isolation Matters Terraform state is the record of what Terraform manages. If environments share state carelessly, one mistake can affect the wrong infrastructure. That is why environment isolation matters. You want: dev changes to stay in dev production changes to stay in production less risk of accidental overlap Option 1: Terraform Workspaces Workspaces let you use: the same Terraform code the same backend different state files That means one folder can manage multiple environments. In my lab, I used terraform.workspace to change behavior based on the active workspace. For example, the instance name