Terraform 1.10 config-driven import and why it matters

Terraform 1.10 introduced config‑driven import, and in the past six months it has matured into a practical workflow for teams managing brownfield infrastructure. Instead of writing ad-hoc CLI scripts, you can declare import blocks in configuration and let Terraform reconcile resources in a repeatable way.

What changed

Import is now part of configuration

You can define import blocks in .tf files, commit them, and run terraform apply to bring existing infrastructure under management. This makes imports reviewable and repeatable.

Safer migration workflows

Because the import intent lives in version control, code review becomes the safety net. Teams can see exactly what is being imported and why.

Why it helps fellow developers

This shifts import from “hero debugging” to a team‑friendly workflow:

• Less tribal knowledge about IDs and one-off commands
• Easier rollback and review
• Better alignment with IaC best practices

Practical action list

1. Use import blocks for any existing infra being adopted into Terraform.
2. Keep import blocks alongside the resources they target.
3. Remove import blocks after successful state adoption.

It’s a small feature that makes the “from legacy to IaC” path way smoother.