> ## Documentation Index
> Fetch the complete documentation index at: https://client-integrations-api-dev.sequen.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Sites & Regions

Sequen operates across multiple geographic regions to provide low-latency access and data residency options for your applications. Each site has its own dedicated API endpoint.

## Available Regions

| Region  | Site Domain          | Location                   |
| ------- | -------------------- | -------------------------- |
| US-East | `api.sequen.com`     | United States (East Coast) |
| US-West | `api.us3.sequen.com` | United States (West Coast) |

## Choosing a Region

When selecting a region for your integration, consider the following:

* **Latency**: Choose the region closest to your users or application servers for optimal performance.
* **Data Residency**: Some organizations have requirements about where data is processed and stored. Select the region that aligns with your compliance needs.
* **Redundancy**: For high-availability setups, you may want to configure failover to an alternate region.

## Using Regional Endpoints

Replace the base URL in your API calls with the appropriate regional domain. For example:

**US-East (Default):**

```
https://api.sequen.com/v1/recommendations
```

**US-West:**

```
https://api.us3.sequen.com/v1/recommendations
```

## Authentication Across Regions

Your API keys work across all Sequen regions.

<Warning>
  Multi-region access is not enabled by default. Contact your Sequen account team to request access to additional regions.
</Warning>

For questions about regional availability or to request access to additional regions, contact [hello@sequen.ai](mailto:hello@sequen.ai).