terragrunt

Terragrunt infrastructure using catalog and live deployment patterns separates module catalogs from live deployments by organizing units and stacks into distinct directories. This approach standardizes module references and reduces configuration drift across multi-account environments.

The Terragrunt Values pattern wires dependencies across units and stacks by passing outputs from one infrastructure component as inputs to another. It enables cross-account deployments by resolving references automatically during multi-account and multi-region infrastructure provisioning.

Scaffolding a live Terragrunt deployment from a catalog template involves creating a minimal catalog with units and a template stack, then generating the live deployment configuration. This automated scaffolding ensures consistent environment isolation and remote state management.

Terragrunt works with OpenTofu for multi-region infrastructure isolation by managing remote state and environment separation through its stack and unit abstractions. It applies catalog patterns and reference resolution to standardize cross-account deployments regardless of the underlying provisioning engine.

Best practices for CI/CD validation in Terragrunt workflows involve implementing automated checks that validate reference resolution, state management, and catalog patterns before deployment. This ensures secure, scalable infrastructure operations across multi-account environments.