Umm. There is a deep integration between OPC UA and MQTT since ca. 2017. For binary and JSON payloads, and with encryption and group key management features.

Umm. There is a deep integration between OPC UA and MQTT since ca. 2017. For binary and JSON payloads, and with encryption and group key management features. I see quite a bit of unsubstantiated bashing lately. Especially advocating 20% solutions that solve the easy parts with less effort. What are you missing from OPC UA?