Hi,
From what we’ve seen, the Industrial Edge Data Bus is meant for internal communication between Edge apps and doesn’t support directly connecting to an external MQTT broker like Mosquitto.
There’s no configuration option to point it to an external broker. The usual workaround is to deploy a custom Docker-based Edge app that acts as an MQTT client, connects to the external broker, and (if needed) republishes data to the Data Bus.
Hope that helps!