Terragrunt and Terragrunt Scale are complementary. Terragrunt is the open source orchestration and configuration layer for scaling OpenTofu/Terraform code: it organizes IaC into units and stacks, manages dependencies through a directed acyclic graph (DAG), and keeps configurations DRY. Terragrunt Scale is a commercial, Terragrunt-native, SCM-hosted or self-hosted CI/CD pipeline including patching and drift management. It adds the workflows most teams otherwise have to build and maintain themselves: pull-request plans, apply-on-merge, blast-radius minimization, least-privilege cloud authentication, drift detection, and automated dependency updates. Terragrunt itself is free and open source, and Terragrunt Scale has a free tier as well.
Terragrunt Pipelines
is an out-of-the-box, best practices, secure CI/CD pipeline, built for Terragrunt, by the creators of Terragrunt.
Terragrunt Drift Detection
regularly compares your live cloud resources to your IaC and automatically opens pull requests to eliminate infrastructure drift.
Terragrunt Patcher
is a dependency management tool that keeps your OpenTofu/Terraform modules up to date, even through breaking changes.