I've migrated a few real environments from Terraform to OpenTofu now, and the good news is that a careful migration is almost boring. The state format is compatible, the CLI is a near drop-in, and the whole thing can be done with a rollback path at every step. The bad news is that "almost boring" still has a couple of sharp edges, and the teams that get hurt are the ones who skip the parity check and go straight to apply . Here's the calm, low-risk playbook I actually follow. Step 0...