Microsoft Graph API - Throttling

Question

Is there a specific number of requests/minute (specific to a tenant) that an application can make to Microsoft Graph APIs before requests start getting throttled?

Answer 1

No, not specific to a tenant (at least not for the Outlook-related parts of the Graph). Throttling is done per user per app. The threshold is 10000 requests every 10 minutes.

https://blogs.msdn.microsoft.com/exchangedev/2017/04/07/throttling-coming-to-outlook-api-and-microsoft-graph/

For non-Outlook stuff, I'm not sure what the limits are. All Graph has to say about it is here:

https://developer.microsoft.com/en-us/graph/docs/concepts/throttling

The takeaway here is you should not depend on a specific threshold since we can always change it if we need to in order to protect the integrity of the service. Ensure that your app can gracefully handle being throttled by handling the 429 error response properly.