MQTT vs OPC UA: Which Protocol Should You Use for Industrial IoT?
Every IIoT architecture decision eventually arrives at the same question: MQTT or OPC UA? Both are legitimate, production-proven protocols with massive industry backing. Both have vocal advocates who'll tell you the other one is wrong. And both are almost certainly present in your future IIoT stack — because the real answer is "both, in different layers."
This guide breaks down the engineering trade-offs so you can make the right choice for your specific manufacturing environment, not based on vendor marketing, but on what actually works at the protocol level.