Both are supported.
Usage of OIDC-based credential acquisition means that repositories are trusted to assume particular credentials in target environments. You can delegate management of limited infrastructure to separate repositories, or have all your infrastructure managed in one repository. Pipelines and Terragrunt are designed to scale to very large and sophisticated monorepo structures.
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.