Terraform 1.7 Adds Declarative Import Blocks

Terraform version management has gotten complicated with all the feature additions and breaking changes flying around. As someone who’s managed Terraform upgrades across large organizations, I learned everything there is to know about what each release actually means for practitioners. Today, I will share the highlights from Terraform 1.7 with you.

HashiCorp released Terraform 1.7 with improved import capabilities and performance enhancements for large state files. The update addresses common pain points around importing existing infrastructure into Terraform management.

Import Improvements

Probably should have led with this section, honestly. The new import block syntax allows declarative imports within configuration files. Previously, imports required separate CLI commands that weren’t version controlled with your config.

Import blocks can reference data sources and locals, enabling dynamic import targets. That’s what makes this feature significant—you can now express imports as code rather than one-off commands that someone has to remember to run.

Performance Gains

State file operations run 30-40% faster for configurations managing over 1,000 resources. Graph evaluation parallelism improvements drive the gains. If you’ve ever waited minutes for a plan on a large configuration, you’ll appreciate this.

Plan operations show similar speedups. Large infrastructure changes complete more quickly, which makes iteration less painful.

Provider Updates

The AWS provider 5.x series adds support for recently announced services. Check provider changelogs before upgrading though—there are occasionally breaking changes.

Azure and GCP providers also see regular updates. Pin provider versions in production to avoid unexpected changes. I’ve seen too many teams bitten by automatic provider updates that changed behavior.

Upgrade Notes

Terraform 1.7 requires no state format changes. Existing configurations work without modification, which is a relief.

Review the changelog for deprecated features scheduled for removal in future versions. Better to update your configs now while deprecation warnings are gentle than wait until things break.