# IIoT architectures

<arch-diagram :edges="[{"from":"sa","to":"ria"},{"from":"sb","to":"rib","label":"reads"},{"from":"sc","to":"ric"},{"from":"ria","to":"broker","dashed":true,"accent":"teal"},{"from":"rib","to":"broker","label":"publish","dashed":true,"accent":"teal"},{"from":"ric","to":"broker","dashed":true,"accent":"teal"},{"from":"broker","to":"central","label":"subscribe","dashed":true,"accent":"teal"}]" :groups="[{"id":"central_z","label":"Central system · one live view of every node","accent":"indigo","nodes":["central","broker"]},{"id":"sites_z","label":"Distributed sites · a Remote Instance + a few sensors, each a small job","accent":"red","nodes":["ria","rib","ric","sa","sb","sc"]}]" :legend="[{"swatch":"indigo","label":"Central"},{"swatch":"red","label":"Edge sites"},{"line":"teal","dashed":true,"label":"MQTT / UNS"},{"line":"neutral","label":"sensor wire"}]" :nodes="[{"id":"central","label":"Central app","sub":"one live view of every node","accent":"indigo","col":2,"row":1},{"id":"broker","label":"Team Broker","sub":"MQTT · UNS","accent":"teal","col":2,"row":2},{"id":"ria","label":"Remote Instance","sub":"Site A","accent":"slate","col":1,"row":3},{"id":"rib","label":"Remote Instance","sub":"Site B","accent":"slate","col":2,"row":3},{"id":"ric","label":"Remote Instance","sub":"Site C","accent":"slate","col":3,"row":3},{"id":"sa","label":"Sensors","sub":"pH · flow · level","accent":"neutral","col":1,"row":4},{"id":"sb","label":"Sensors","sub":"pH · flow · level","accent":"neutral","col":2,"row":4},{"id":"sc","label":"Sensors","sub":"pH · flow · level","accent":"neutral","col":3,"row":4}]">



</arch-diagram>

The IIoT shape: many distributed Remote Instances, each reading just a few sensors and doing one small job, publish to a central Team Broker. One central app subscribes and sees every node at once. Each node is small — the value is the large-scale live picture they add up to. Think water-quality monitoring across dozens of pump stations.

**Use it when** — Lots of small, spread-out measurement points that only pay off when aggregated into one live view.