Late in the party, Microsoft has finally enabled IFFT (If This Then That) support for Cortana. Using this you can use Cortana to trigger and interact with so many services. You can have your own keyword that you can use with Cortana to trigger something else which could be a device or interact with a service, and son. IFTT offers more than 600 services. Using IFTT also gives you the advantage of triggering multiple services with one phrase.
You can also use Applets on IFTTT with Cortana to trigger multiple actions with one phrase. So if you are watching a movie at home, you can say “Hey Cortana, movie time” and she’ll turn down your Hue lights, Harmony TV turned on, and your Nest Thermostat set to the right temperature.
There is a dedicated Cortana section for IFTT, which you can view here. You will need to connect your Microsoft Account to go ahead and use it. Make sure to link the Microsoft account which you are using on your PC, and Laptops or any other device.
The next announcement is about the increase in support for a number of Smart Home devices. It can now manage ecobee, Honeywell Lyric, or Honeywell, LIFX, TP-Link Kasa Smart Plug, and Geeni. You will have to connect Cortana with the services. Go to the Cortana app on your phone, click Notebook, then click Connected Home. From there, you can connect your favorite smart home accounts and control your devices from anywhere you use Cortana.