Industrial MQTT gateway checklist for a brownfield plant
The decisions that matter before an MQTT edge gateway leaves the lab: protocol drivers, buffering, namespaces, quality, security, and ownership.
Sparkplug B
MQTT namespace + payload + state spec for OT.
The Eclipse specification turning MQTT into a plug-and-play OT fabric: a fixed topic namespace (group/message-type/edge-node/device), protobuf payloads, and birth/death session semantics giving state awareness without polling.
See also: MQTT · Unified namespace · Birth certificate (Sparkplug)
In depth
The unified namespace, explained
One broker, one topic tree, every producer and consumer decoupled. What a UNS is, what it demands, and where it goes wrong.
Sparkplug B in one page
The topic namespace, birth certificates, and state awareness that turn MQTT from a transport into a plug-and-play OT data fabric.