Regarding MQTT on NS and AS


Is it a must to have MQTT installed on Network Server, Application Server separately? or can i have a single instance of MQTT installed on one server and both NS and AS pointing to this single instance

MQTT server(s) can be anywhere, as long as it’s reachable via the network.

As the AS and Gw <> NS topics are different, it is fine to use a single MQTT server.