The Internet of Things (IoT) refers to the network of physical objects that feature an IP address for internet connectivity, and the communication that occurs between these objects and other internet-enabled devices/systems.
Hence, any piece of hardware that has the ability to connect to the internet and transmit data is known as an IoT device.
IoT involves extending internet connectivity beyond traditional devices (e.g., laptops and smartphones) to a wide range of traditionally non-internet enabled, everyday devices. Since these devices are embedded with the required technology, they can communicate and interact over the internet. They can also be remotely monitored and controlled.
An IoT device can be anything from a light bulb that connects with your smartphone to adjust its hue, to a smart home device that can respond to your voice commands.
The illustration below shows some examples of IoT devices:
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