> and if that cloud goes down, you could struggle to turn your lights on For the mainstream smart bulbs and switches I have (Philips Hue bulbs and Belkin Wemo

> and if that cloud goes down, you could struggle to turn your lights on For the mainstream smart bulbs and switches I have (Philips Hue bulbs and Belkin Wemo switches) their app-based controls work even if the Internet connection is down. The only thing that doesn't work is voice-assistant controls, and also the configuration of schedules, etc. And as others have noted, they all work fine as dumb physical bulbs and switches.