# Region

> An AWS geographic region where infrastructure resources are deployed.

A *region* refers to an AWS geographic region (e.g., `us-east-2`, `eu-west-1`) where infrastructure resources are deployed.

In the Panfactum stack, a region is a subdivision of an environment. Each environment can span multiple regions, and each environment-region pair may host its own Kubernetes cluster.

Region-specific configuration is stored in `region.yaml` files within the environments directory:

```txt
environments/
  production/
    us-east-2/
      region.yaml    <- region-specific settings
      module1/
      module2/
    eu-west-1/
      region.yaml
      module1/
```

Each region's `region.yaml` can define settings such as the AWS region name, provider configuration, and Terragrunt variables that apply to all modules deployed in that region.