Consider licensed low power wide area networks (LPWANs), such as NB-IoT, and unlicensed LPWANs, such as LoRaWAN®. LoRaWAN is optimal for long battery lifetime, and for devices that are low cost and only need to send small amounts of data a few times per hour. For its part, NB-IoT is optimal for sending larger packets, guaranteeing downlink latency and guaranteeing a quality of service with the licensed band spectrum. Due to these characteristics, NB-IoT is suited for critical Internet of Things (IoT) use cases, while LoRaWAN is perfect for the volume of IoT (even massive IoT) use cases, because most IoT use cases need low cost devices with a long battery lifetime to achieve an attractive return on . (For a more in-depth comparison of LoRaWAN and NB-IoT, take a moment to read 10 Things About LoRaWAN & NB-IoT.)