# Hosts and authorization

See the supported Regions and required scopes of Checkout.

## Hosts

The Checkout application is hosted at the following URLs:

| Region | Application URL |
| --- | --- |
| Europe (Google Cloud, Belgium) | `https://app.checkout.europe-west1.gcp.commercetools.com` |
| Europe (AWS, Frankfurt) | `https://app.checkout.eu-central-1.aws.commercetools.com` |
| North America (Google Cloud, Iowa) | `https://app.checkout.us-central1.gcp.commercetools.com` |
| North America (AWS, Ohio) | `https://app.checkout.us-east-2.aws.commercetools.com` |
| Australia (Google Cloud, Sydney) | `https://app.checkout.australia-southeast1.gcp.commercetools.com` |

If the documentation refers to `https://app.checkout.{region}.commercetools.com` or uses the `{region}` placeholder, replace `{region}` with the actual value (for example, `europe-west1.gcp`).

## HTTP API Hosts

The Checkout HTTP API is hosted at the following URLs:

| Region | API URL |
| --- | --- |
| Europe (Google Cloud, Belgium) | `https://checkout.europe-west1.gcp.commercetools.com/` |
| Europe (AWS, Frankfurt) | `https://checkout.eu-central-1.aws.commercetools.com/` |
| North America (Google Cloud, Iowa) | `https://checkout.us-central1.gcp.commercetools.com/` |
| North America (AWS, Ohio) | `https://checkout.us-east-2.aws.commercetools.com/` |
| Australia (Google Cloud, Sydney) | `https://checkout.australia-southeast1.gcp.commercetools.com/` |

If the documentation refers to `https://checkout.{region}.commercetools.com`, replace the `{region}` placeholder with the actual value.

## Authorization

Checkout uses tokens from [authorization flows](/api/authorization.md) with the [scopes](/checkout/scopes.md) outlined in the Checkout HTTP API documentation.

## Related pages

- [Area overview page with navigation](/checkout.md)
- [Previous page: Overview](/checkout/overview.md)
- [Next page: Checkout Links best practices](/checkout/checkout-links.md)
- [Search documentation and API specs](/search.md)