You can have IFTTT turn on your Philips Hue front garden and porch lights when your video doorbell sees someone approaching, for example.
If you have a range of devices or services that span different platforms, you can still create automated routines (or applets) if they support a third-party service called IFTTT (If This Then That). Routines with Google, Alexa, and Siri are limited in scope, but IFTTT offers complex chains of automation and links together disparate devices and software. You can have IFTTT turn on your Philips Hue front garden and porch lights when your video doorbell sees someone approaching, for example.