The concepts of the Internet of Things and Industrial Internet of Things lend themselves to a myriad of applications, including consumer, infrastructure, agriculture, military, and much more. What can be confusing is the equally broad spectrum of wireless enabling technologies for the IoT and IIoT, which fall into three broad categories: short-range, medium-range, and long-range wireless. We’ll sort out some of the intricacies of these enabling technologies and give engineers a framework on which to build their understanding of how they fit into the big picture.