Tech side: according to https://aws.amazon.com/iot-core/features/ https://aws.amazon.com/iot-core/features/ the physical network seems to be implemented using L

Tech side: according to https://aws.amazon.com/iot-core/features/ https://aws.amazon.com/iot-core/features/ the physical network seems to be implemented using LoRa https://en.wikipedia.org/wiki/LoRa https://en.wikipedia.org/wiki/LoRa which has a range of up to 10 km in perfect situations (so more likely 1 km in urban environments) Edit: actually maybe Amazon uses a proprietary version of LoRa: https://enterpriseiotinsights.com/20201208/channels/news/lora-alliance-semtech-in-talks-with-amazon-to-switch-sidewalk-over-to-lorawan https://enterpriseiotinsights.com/20201208/channels/news/lor...