IoT, or the Internet of Things, quite literally talks about how physical objects (aka things) such as machines and materials are now a part of a very large system (you guessed it right, the Internet) that allows them to communicate and share data with the help of sensors, microcomputers, assisted software, etc.
From tracking your online shipment on your laptop to switching on the smart lights in your room using voice commands, all this “convenient access to information” is made possible due to the “Internet of Things”.