LoRa long-range communication system, similier to WIFI but working over very long distances (up to 10km). Unlike regular wifi, LoRa is designed to send only very small amounts of data, and pretty slowly.
LoRaWAN defines the communication protocol and system architecture for network based on LoRa.
The Things Network is a global collaborative Internet of Things ecosystem that creates networks, devices and solutions using LoRaWAN.