Count provisioned devices by DPS
This post shows a way to find out how many IoT (Edge) devices have been provisioned by a specific enrolment group within the last x minutes.
The solution could be much simpler if I just wanted to know how many devices are registering themselves. In this case the build in metrics are enough to get that information.
IoT Hub Metrics
The use case required a more sophisticated solution that is able to reflect the tenants, identified by tags.