Wireless sensor network can be described as a self-configured and infrastructureless wireless network that is used to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion, or pollutants. It also conveys its data through the network to the main location or sink where the data can be observed and analyzed. A sink or base station is an interface between the users and the network. The required details from the network can be retrieved by putting queries in the sink. Wireless sensor networks are applied in various domains such as the military, area monitoring, transportation, health applications, environmental sensing, structural monitoring, industrial monitoring, and the agricultural sector. This book elucidates the concepts and innovative models around prospective developments with respect to wireless sensor networks. The ever-growing need for advanced technology is the reason that has fueled the research in WSNs in recent times. This book will provide comprehensive knowledge to the readers.