What is IoT-
Internet of Things (IoT) refers to linking of devices that make a network and can share data. Further, here devices can be a bulb, a vehicle, a sensor in the human body, and even a door that you can open from a remote control. IoT helps in automation, technology-driven business, health, smart city, intelligence vehicle system and many areas where automation needs.
How the Internet of Things Works
You can understand it by example. Suppose your home’s power control system is connected to the Internet. Offcource your mobile is connected to the Internet. And you had gone to the office without switching off bulbs and fans. You do not need to come home you can do it from your office. You can monitor your home from anywhere connecting your security camera to mobile.
Internet of Things Applications, Development and Jobs
There are diverse applications of IoT devices. Moreover, from the health sector to industrial and big companies are investing billions of dollars in the different sectors. Key players are Cisco , Microsoft, Qualcomm, and Intel. Furthermore, this sector is also going to create a number of Job opportunities. Such as researcher, developer and maintenance sector and in the e-commerce industry.
Internet of Things Devices List-
1- Amazon Dash Buttons
2- Amazon Echo
3- Body Area Sensors
4- Home automation
Aliexpress, Amazon, and E-Bay are the marketplaces where IoT devices you can purchase for your needs.
To sum up, I have given an overview of the Internet of Things hope it will help you to understand.
ReferenceInternet of Things”.  Microsoft will invest $5 billion in IoT. Here’s why.  Li, Shancang, Li Da Xu, and Shanshan Zhao. “The internet of things: a survey.” Information Systems Frontiers 17, no. 2 (2015): 243-259.
 Hassanalieragh, Moeen, Alex Page, Tolga Soyata, Gaurav Sharma, Mehmet Aktas, Gonzalo Mateos, Burak Kantarci, and Silvana Andreescu. “Health monitoring and management using Internet-of-Things (IoT) sensing with cloud-based processing: Opportunities and challenges.” In 2015 IEEE international conference on services computing (SCC), pp. 285-292. IEEE, 2015.
 Bandyopadhyay, D. and Sen, J., 2011. Internet of things: Applications and challenges in technology and standardization. Wireless Personal Communications, 58(1), pp.49-69.