Our Current Deployment:
1) several back-end devices running an MQTT client connect to an opensource MQTT broker (Mosquitto)
2) Mosquitto is running on a Linux VM and acts as a broker and a communication point between back-end & front-end devices.
3) Several front-end devices (Mobile App / browser based GUI) connect to the broker. some of the front-end devices read & write to the broker (Sub & Pub) while some front-end only read (Sub)
4) Some front-end devices connect for a few minutes & some front ends are always connected.
5) Although the amount of data being transferred is a few kb, it is sometimes fast changing.
6) No TLS is used for the MQTT traffic & it cannot be enabled on the back-end devices.
This setup works for us, but I am looking for a way to scale up and was considering the azure IoT hub, but I am confused if the IoT hub can be used as a broker or I would need additional components to be deployed for acting as a MQTT broker ?
