Abstract: Internet of Things (IoT) gained a great attention from researchers, it becomes an important technology that promises a smart human being life, by allowing a communications among objects, machines and every things together with peoples. IoT represents a system which consists a things in the real world, and sensors attached to or combined to these things, connected to the Internet via wired and wireless network structure. The sensors can use various types of connections such as RFID, Wi-Fi, Bluetooth, and ZigBee, in addition allowing wide area connectivity using technologies such as GSM, GPRS, 3G, and LTE.. by the technology of the IoT, the world will becomes smart in every aspects, the IoT will provides a means of smart cities, smart healthcare, smart homes and building, in addition to many important applications such as smart energy, grid, transportation, waste management and monitoring . In this paper a concept of IoT applications and future possibilities for related technologies in addition to the challenges that facing the implementation of the IoT.

Keywords: IoT Applications, Future Technologies, Smart Cities, Smart Environment, Smart Energy and Grid, Smart Manufacturing, Smart Healthcare