Does the Shelly 2PM Gen3 work with HomeKit, Alexa, and Google Home?
The Shelly 2PM Gen3 runs two switches or one shutter, and measures power.
It gets Matter over Wi-Fi after a firmware update. It is a two-channel in-wall relay. It suits Google Home, Alexa and SmartThings users through an integration (the maker's cloud). Home Assistant users reach it through an integration (local Wi-Fi control).
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.