Think of it as one hub that can control all of your other hubs, as well as other smart devices like Zigbee switches, WiFi devices, etc. You can setup advanced routines like if this Zigbee PIR sensor activates, at the weekend, overnight, then turn on the hue bulbs, lightwave switch, etc. Smartthings is Samsung's version. Or if you are a bit geeky and want to build one yourself, cheaper, you can use a raspberry pi micro computer with something like Home Assistant or Domoticz.