Abstract: The Internet of Things is fast growing technology with business opportunities and risks. It is confluence of wireless networks, internet and computing. IoT connects the physical objects like vehicles, buildings and other devices with embedded intelligent sensors and enables these objects to exchange and collect data. The domains where IoT is becoming popular are smart cities, e-health, smart grids, e-commerce, smart transportation, and e-commerce etc. The embedded and wearable computing will have greater impact in providing services in wide range of applications by 2020[1]. The architecture of IoT is incorporated with the latest technologies of communication protocols, intelligent sensor and RFID. The security and privacy issues of IoT are crucial as it connects large number devices. In this article we analyze a state of art review of IoT with regard to technologies, protocols, application issues.

Keywords: Internet of Things (IoT), IoT protocols, IoT, architecture, IoT applications