Internet of Things is the concept of connecting devices to the Internet and to other devices. The IoT is a giant network of connected things to collect and share data.
What are IoT devices?
An IoT device is hardware that contains sensors and mini-computer processors that act on the data collected by the sensors. Essentially, IoT devices are mini computers, connected to the internet.
But how does it work?
First, sensors or devices collect data, this could be a temperature reading or a light sensor.
Next, that data is sent to the cloud this can trough variety of methods for example: WiFi, Bluetooth, cellular, satellite or connecting directly to the internet.
Once the data is send to a software platform of some kind it will be processed, the information is then made useful to the user who is subscribed in some way (for example via an alert to the user his cellphone).