IoT is the evolution of the network in which objects acquire intelligence: they become recognizable and transmit information and data about themselves, allowing interaction with people and other devices.
Internet of Things is a museum where information sheets about a particular work appear on your smartphone when you approach it. It is a shop where you just move an item to see all its features on a nearby screen.
The word IoT is used to identify a combination of technologies that allow objects to be linked to the network, in order to collect and communicate information and take related actions.