> For the complete MongoDB documentation index, see www.mongodb.com/docs/llms.txt

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# Atlas Data Federation Regions

**Note:**

To prevent excessive charges on your bill, create your Atlas Data Federation in the same cloud provider region as your data source. You can query AWS (Amazon Web Services) S3 (Simple Storage Service) only using federated database instances created in AWS (Amazon Web Services), query Azure Blob Storage only using federated database instances created in Azure (Microsoft Azure), and query Google Cloud Storage only using federated database instances created in Google Cloud.

Atlas Data Federation routes your federated database requests through one of the following regions:

### AWS

| Data Federation Region | AWS (Amazon Web Services) Region | Atlas Region |
| --- | --- | --- |
| Northern Virginia, USA | `us-east-1` | `US_EAST_1` |
| Oregon, USA | `us-west-2` | `US_WEST_2` |
| Sao Paulo, Brazil | `sa-east-1` | `SA_EAST_1` |
| Ireland | `eu-west-1` | `EU_WEST_1` |
| London, England, UK | `eu-west-2` | `EU_WEST_2` |
| Frankfurt, Germany | `eu-central-1` | `EU_CENTRAL_1` |
| Tokyo, Japan | `ap-northeast-1` | `AP_NORTHEAST_1` |
| Seoul, South Korea | `ap-northeast-2` | `AP_NORTHEAST_2` |
| Mumbai, India | `ap-south-1` | `AP_SOUTH_1` |
| Singapore | `ap-southeast-1` | `AP_SOUTHEAST_1` |
| Sydney, Australia | `ap-southeast-2` | `AP_SOUTHEAST_2` |
| Montreal, QC, Canada | `ca-central-1` | `CA_CENTRAL_1` |

**Note:**

You will incur charges when running federated queries. For more information, see [Data Federation Costs.](https://www.mongodb.com/docs/atlas/billing/data-federation.md#std-label-atlas-data-federation-billing)