Google-owned Nest Learning Thermostat as well as the Nest Protect smoke and carbon monoxide alarm are both about to become smarter thanks to support with IFTTT. With IFTTT, you can create automatic actions for both home automation products based on if a certain action is triggered so you don't have to manually adjust settings yourself.
IFTTT, which stands for if this then that, makes it easy for users to create commands such as sending you an email if your smoke detector's battery is low. Given that IFTTT already works with a variety of other home automation products, including Philips Hue and Belkin WeMo, and also wearable Jawbone Up, you can set up a trigger so that when your Nest thermostat is set to "away" mode, the Hues lights in your home will automatically switch off.
By intelligently grouping and triggering actions, home automation products in separate ecosystems made by different vendors will become more useful to the end user so that they don't have to manually control distinct actions.