The Internet of Things$($IoT$)$ is

A$.$

a constellation of$$ technologies, from machine learning to natural language$$ processing, that allows machines to$$ sense, comprehend,$$ act, and learn.

B$.$

the use of computerized systems in manufacturing to track and document the transformation of raw materials into finished goods and optimize their production output.

C$.$

the interconnectivity of$$ objects, embedded with$$ software, sensors$,$ and actuators that enable these objects to collect and exchange data over a network without requiring human intervention.

D$.$

the ongoing automation of traditional manufacturing and industrial$$ practices, using modern smart technology.