Internet of Things (IoT)

Connecting and running logic on devices. The split is cloud vs edge.

Service	Runs	Choose when	Key distinction
AWS IoT Core	In the cloud	Connect/manage devices, route messages	Message broker, Device Shadow, rules
AWS IoT Greengrass	On the device	Act locally, work offline	Runs Lambda/ML at the edge; syncs to IoT Core

• IoT Core (cloud endpoint) vs Greengrass (edge runtime) — they work together.