"The Internet of Things (IoT) is a network of connected physical objects or things those are working along with sensors, wireless trans-receiver modules, processors, and software required for connecting, processing and exchanging data among the other devices over the internet. These objects or things are devices ranging from simple handhold devices to complex industrial heavy machines. A thing in IoT can be any living and non-living object that can be provided capabilities to sense, process and exchange data over a network. The IoT provides people to handle their household works to industrial tasks smartly and efficiently without intervention of human. The IoT provides smart devices for home automation as well as business solutions for delivering insights into everything from real-time monitoring of the working system to supply chain and logistics operations. The IoT has become one of the most prominent technological inventions of the 21st century. Due to the versatility of IoT devices, there are numerous real-world applications of the IoT in various domain such as smart home, smart city, healthcare, agriculture, industry, transportation etc. The IoT has emerged as a paradigm-shifting technology that is influencing various industries. Many companies, governments and civic bodies are shifting to IoT applications to improve their works and to become more efficient. The world is slowly transforming towards a 'Smart world' with smart devices. As a consequence, it shows many new opportunities coming up in the near 'Smart' future for IoT professionals. Therefore, there is a need to keep track of advancements related to IoT applications and further investigate several research challenges related to applicability of IoT in different domains, to make it more adaptable for practical and industrial use. With this goal, the book will provide most recent and prominent applications of IoT in different domains as well as issues and challenges in developing IoT applications for var