cloud based thermostat is a wide term. You need to be a little more specific.
Like Zigbee, Z-wave or Wifi? All of those can be cloud. I don’t have any thermostats yet, but I am considering getting some Zigbee ones, because those can connect locally to my Home Assistant instance.
Yes, I chose a wide term on purpose. I’m curious to see what all people use.
I’m currently using an ecobee, but want to a selfhosted server rather than third party for HVAC.