Bluetooth mesh is a mesh networking standard that allows for many-to-many communication over the conventional Bluetooth Low Energy (BLE) radio.
The advantage of choosing Bluetooth mesh over the existing mesh networking standards, such as Zigbee and Thread, is that all existing Bluetooth Low Energy-capable devices (e.g. smartphones, tablets, and laptops) can communicate with the Bluetooth mesh devices without a gateway.
Moreover, unlike Zigbee which relies on a coordinator device to be always available and perform managerial tasks, Bluetooth mesh network is decentralised by design — making it an ideal choice for implementing distributed control and data acquisition systems.
Bluetooth mesh is, by far, the most flexible and secure mesh networking technology available today.