The Matter standard works by providing a set of open source specifications and protocols that IoT device manufacturers can follow in order to ensure their products are compliant with the standard. The specifications and protocols are available for download from the Connected Standards Alliance (CSA) website, and include both hardware and software requirements.
To be compliant with the standard, device manufacturers must reference and update their products to meet the specifications outlined in the Matter specification. This includes using underlying communication technologies like Bluetooth LE, Wi-Fi, Ethernet, and Thread.
The Matter standard also includes a certification program that allows manufacturers to have their products tested and certified by authorized test labs located in 16 different locations across nine countries. This makes it easy for manufacturers to bring Matter-compliant products to market.