My experience using a consumer IoT tracker device for tracking keyrings shows how IoT networks are constructed
using a combination of Bluetooth, mobile networks and cloud computing networks.
Bluetooth, a protocol best known for sending audio or keystrokes, is becoming a full-fledged data protocol that offers simplicity while participating in a complex end-to-end IoT system. There are many standards and technologies used for IoT networking.
In addition to Bluetooth and mobile networks, there are many low-power wide area technologies, such as Narrow-Band IoT (NB-IoT) and Long-Range Wide Area Network (LoRaWAN), and nearby connection alternatives such as NFC or RFID. IoT networking requires a combination of different technologies working in conjunction, depending upon the use case requirements.