IPv6-based low-power mesh protocol on IEEE 802.15.4; needs Matter or HomeKit on top to control devices.
protocol
Knowledge about Thread
Zigbee basics: coordinator, routers, end devices and the meshguide · unverified · How a Zigbee network is built: exactly one coordinator, mains-powered routers that relay traffic, sleepy end devices that talk through one parent, and how this differs from Thread on the same radio.