Moreover, practical users can also benefit from this book: Emergency response teams can leverage IoT systems with the extended communications-range capability provided by LPWAN technology. Moreover, machine-to-machine (M2M) and thing-to-thing (T2T) communications also benefit from this notion, as well as the Social IoT (SIoT) concept, owing to the “low-power” consumption advantage that is brought up by LPWAN technologies, e.g., 10 years battery lifetime projection for the LoRaWAN end-devices is very promising. Eventually, this proposed book aims at covering all aspects of LPWANs, from A to Z, theoretical aspects, hardware platforms and technologies, along with applications, opportunities, and, finally, challenges. Researchers working in wireless communications technologies and advanced-level students taking courses in electrical engineering or computer science will benefit from this book as a reference. Professionals working within this related field will also want to purchase this book.