Terragrunt

Terragrunt is an open-source thin wrapper for Terraform and OpenTofu, created by Gruntwork, that helps teams keep infrastructure code DRY and manageable across many environments and modules. It handles remote state configuration, dependencies between modules, and running commands across multiple units, reducing the copy-paste and boilerplate that plague large Terraform codebases as organizations scale their infrastructure.

Terragrunt is widely adopted by platform and DevOps teams managing dozens or hundreds of Terraform modules across dev, staging, and production. It lets teams define configuration once and reuse it, orchestrate applies with dependency ordering, and enforce consistent patterns. For companies whose Terraform has grown unwieldy, Terragrunt provides structure without replacing the underlying tooling they already use.