Thread is a low-power mesh networking technology, designed specifically for home automation applications. It is an IPv6-based standard that uses 6LoWPAN technology over the IEEE 802.15.4 protocol. You can connect a Thread mesh network to the Internet with a Thread Border Router.
The nRF Connect SDK provides support for developing Thread applications based on the OpenThread stack. The OpenThread stack is integrated into Zephyr.
You can use Thread in parallel with Bluetooth Low Energy. See Multiprotocol support for more information.
See Thread samples for the list of available Thread samples.
You can find more information about Thread on the Thread Group pages.