Internet of Things (IoT): State-of-the-Art Technologies, Challenges and Applications

IoT is an extension of technology world, and it is growing at rapid speed in our daily-life routine works. The primary objective of IoT is to provide service as fast as require with minimum manpower or without manpower which makes human life more comfort. It is burning field where a large number of sensors are interconnected via high-speed Internet through which information is transmitted to global database. These sensors are basically concerned with the daily routine objects such as AC power, health issue, gas connection. IoT usage is in various fields such as healthcare, industry, Smart City, etc. There are two important factors for IoT to establish communication between the heterogeneous technologies and to understand various taxonomies which require for IoT. This paper presents basic elements of IoT, different architectures, technologies, challenges and issues and applications.