# Understanding Terra environments

You have access to three environments: 

* **Testing**: you'll have access to 50 [users](https://docs.tryterra.co/reference/health-and-fitness-api/core-concepts#user) 
* **Staging**: you'll have access to 50 [users](https://docs.tryterra.co/reference/health-and-fitness-api/core-concepts#user)
* **Production**: unlimited

You can configure each environment separately on your [Terra Dashboard.](https://dashboard.tryterra.co/)

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#### User limits

Note that for testing & staging, there is a user limit of 50 users on each environment. 

These are additional test users provided by Terra that are part of any plan!

If you reach the user limit, you should deregister the testing accounts you no longer need using the [auth-deauthenticateuser](https://app.gitbook.com/s/eJJpVMsUARUJq9lYmL6t/health-and-fitness-api/readme#auth-deauthenticateuser "mention") endpoint.
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## Rate limits

Terra ***does not impose any rate limits*** on the REST API. Note that API requests are generally not necessary unless backfilling historical data
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