azure active directory – Graph API throttling limits for a multitenant app

For a multi-tenant OAuth based enterprise application calling the Graph API where dooes the published app and tenant API throttling limits apply to:

the single global application and the “partner” tenant
each instance of the application (service principal) and “customer” tenant that has consented to the app
some other combination

I’m trying to understand if throttling limits are essentially counted to the “partner” app-tenant or the “customer” app-tenant or some combination.

Via DAP had an SP principle which encountered these throttling limits, not sure what would happen in a multi-tenant scenario