# Environments
source: https://developer.mastercard.com/open-finance-europe/documentation/unlicensed/aiia-data/api-basics/environments/index.md

## Environment Domains {#environment-domains}

Access is provided to the Sandbox environment by default to when you create an application in the [Developer Portal](https://devportal.openbanking.mastercard.com). Test banks are provided in this environment, which provide the same features as live banks, without exposing real bank data.
Note: Sandbox data is not guaranteed to be persistent over time, as we delete data periodically.

The Production environment provides access to real bank data. For details on how to gain production access, refer to [Production](https://developer.mastercard.com/open-finance-europe/documentation/unlicensed/aiia-data/production/accessing-prod-data/index.md).
* Sandbox
* Production

```Sandbox
https://api-sandbox.aiia.eu
```

```Production
https://api.aiia.eu
```