OPC UA Protocol: The Complete 2026 Technical Guide
OPC UA in 2026 — companion specs, PubSub over MQTT/UDP, FX field-level extensions, security state, and migration from DA/Classic.
OPC UA PubSub over MQTT 5: A Production Implementation Tutorial
Step-by-step OPC UA PubSub over MQTT 5 implementation — DataSetMessage mapping, JSON vs UADP, security profiles, and a working aiomqtt + asyncua tutorial for 2026.
OPC UA Pub/Sub: MQTT vs UADP Architecture Comparison
OPC UA Pub/Sub architecture compared — UDP UADP for deterministic LAN delivery vs MQTT for cloud-friendly fan-out. Mappings, message security, and when each wins.