This book was written using a tutorial approach and is intended to appeal to a broad audience. The book covers the fundamentals of short-range wireless networking using ZigBee? and IEEE 802.15.4? standards. The ZigBee and IEEE 802.15.4 standards are covered with the same level of detail. In addition to technical details, the book contains high-level overviews that would be informative for a reader who is only interested in understanding the general concept of ZigBee wireless networking. This book provides the big picture of ZigBee wireless networking, from the radio frequency (RF) and physical layer considerations up to the application layer details. Considering the multidisciplinary nature of this book, the required background materials are also provided.