NB-IoT, (Narrow Band Internet of Things), also known as Cat NB1, is a standard for connecting “things” to the internet through the cellular network. This is a standard focused on machine to machine communications. The range of applications are vast, with key applications including asset tracking, intrusion detection, utility meter reporting, smart parking areas, and home health care monitoring. This class of communications devices generally have low data volume, are not highly mobile, and not latency sensitive, but they can be mission critical. Most importantly, though, NB-IoT devices will likely be deployed in very large numbers. This application brief discusses NB-IoT rollout concerns.