Narrowband IoT, wide scope of opportunities: the NB-IoT industry is on the rise. Undoubtedly, it is the most promising solution in the LPWA market because NB-IoT is deployed over operators' current spectrum bands. One feature of NB-IoT is that it provides effective indoor coverage. It also supports connections with massive low-throughput and low-cost devices. Additional advantages worth mentioning are its low power consumption and optimized network architecture. It is foreseeable that NB-IoT will soon evolve into large-scale deployment around the world.