Does the SwitchBot Hub 3 work with HomeKit, Alexa, and Google Home?
The Hub 3 bridges up to 30 SwitchBot sub-devices and IR appliances to Matter platforms.
It is also a Matter controller, with a display, a dial and sensors. It suits Home Assistant users, with native support through Matter over Wi-Fi. HomeKit, Google Home, Alexa and SmartThings users reach it through an integration (a Matter bridge).
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.