What term commonly used to describe a communication network linking physical objects $($devices$)$ that are embedded with electronics, sensors$,$ software and network that allows the objects to be sensed and controlled remotely across existing network infrastructure?

Question $3$ options:

PSTN $($Public Switched Telephone Network$)$

PAN $($Personal Area Networks$)$

IOT $($Internet of Things$)$

WAP $($Wireless Access Points$)$