IOT

Internet of things
IOT is a device to device connection. No human should be involved.

Constraints
There is no real IOT for now, the object connect to a router or a sim card before reaching internet. Your alarm does not connect with your coffee machine, it connects with the modem that connect to the coffee machine.

Human are still involved for confirmation

IOT are not always connected because of battery limitation. They are mostly in sleep mode and, wake up and connect, when needed.