IoT (Internet of Things) are the smart devices that support internet connectivity and allows the users to interact with the other devices over the internet by providing remote access to the user.
IoT products examples include smartphones, smartwatches, smart fire alarm, fitness trackers, smart security systems, etc. For future of IoT, you can read the blog on future scope of IoT.
Google Home Voice Controller, Amazon Echo Plus Voice Controller, Amazon Dash Button, August Doorbell Cam, August Smart Lock, etc. are the few examples of IoT devices.
If you are interested to learn IoT, you can take up this IoT Course by Intellipaat.
You can watch this video on IoT to get an overview of IoT Technology: