The IoT protocol stack explained as a modular architecture — device, transport, messaging, and semantic layers, with how to choose MQTT, CoAP, or OPC UA.
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.
DDS vs MQTT vs OPC UA in 2026 — QoS, discovery, security, broker vs brokerless, and a decision matrix for picking the right industrial messaging protocol by use case.
The 2026 map of IoT and industrial communication protocols — MQTT, OPC UA, Modbus, CAN, Ethernet/IP, BACnet, LoRaWAN — and how to pick the right stack by layer and use case.
Hands-on tutorial: building a production-ready OPC UA server in Python with asyncua — address space modeling, security policies, subscriptions, and Docker packaging for IIoT in 2026.
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.