Streetlight controllers report status every minute with no operator in the loop. What source class is that telemetry?
Select an answer to reveal the explanation.
Short Explanation
Lights phoning home on a timer is machines chatting with machines. Nobody is on the call. That is textbook machine-to-machine telemetry for Big Data pipelines.
Full Explanation
Machine-to-machine (M2M) sources are automated device-to-system or device-to-device exchanges without a human composing each message. Streetlight status heartbeats illustrate high-Velocity M2M telemetry. Distinguishing M2M from P2P and P2M prevents mis-bucketed inventories. Municipal IoT programs rely heavily on this class.