Learn in the textbookIoT Networks
DefinitionEdge computing (エッジコンピューティング) places computers close to the IoT devices to process data there, then sends the results on to the IoT server.
ExplanationBecause processing happens near the site, the system can respond without waiting for a round trip to a distant server, which suits control tasks that need an immediate (real-time) response. Filtering data before sending it also cuts network traffic and the load on the server.
AnalogyInstead of checking everything with head office, each branch settles what it can decide itself and reports only the outcome to head office.
Memory hookEdge means the rim or border: seen from the server at the network's center, the edge is the on-site side, and that is where processing happens.