Terrform and Terragrunt -Tree

infra/

├── environments/

│   ├── dev/

│   │   ├── us-west-2/

│   │   │   ├── terragrunt.hcl

│   │   │   ├── main.tf

│   │   │   └── variables.tf

│   │   └── ...

│   ├── test/

│   │   ├── us-west-2/

│   │   │   ├── terragrunt.hcl

│   │   │   ├── main.tf

│   │   │   └── variables.tf

│   │   └── ...

│   ├── qa/

│   │   ├── us-west-2/

│   │   │   ├── terragrunt.hcl

│   │   │   ├── main.tf

│   │   │   └── variables.tf

│   │   └── ...

│   └── prod/

│       ├── us-west-2/

│       │   ├── terragrunt.hcl

│       │   ├── main.tf

│       │   └── variables.tf

│       └── ...

├── modules/

│   ├── vpc/

│   │   ├── main.tf

│   │   ├── variables.tf

│   │   └── outputs.tf

│   ├── compute/

│   │   ├── main.tf

│   │   ├── variables.tf

│   │   └── outputs.tf

│   ├── database/

│   │   ├── main.tf

│   │   ├── variables.tf

│   │   └── outputs.tf

│   └── ...

└── global/

    ├── terragrunt.hcl

    ├── main.tf

    └── variables.tf

1. infra/: The root directory contains all the infrastructure code.

2. environments/: This directory holds configurations for different environments (dev, test, qa, prod).

   • dev/, test/, qa/, prod/: Each environment has its own subdirectories.
     • us-west-2/, us-east-1/, etc.: Subdirectories for each AWS region.
       • terragrunt.hcl: Terragrunt configuration file for each region within an environment.
       • main.tf: Region-specific Terraform code defining resources.
       • variables.tf: Variable definitions for the region.

3. modules/: This directory contains reusable Terraform modules as before.

4. global/: This directory contains configurations that are common across all environments.

In this structure, you would organize your environments by their respective regions, allowing you to manage infrastructure configurations tailored to specific regions within each environment. This can be useful for scenarios where you have requirements or preferences for deploying resources in particular regions for each environment.