The Wemo Bridge is a new way to connect all of your Wemo smart home devices into Apple HomeKit. This allows you to use Siri to control your devices that are already installed in your home.
With the Wemo bridge, you can also control your Wemo devices from the Apple Watch and from the Home app on your iPhone and iPad. This setup allows you to connect these devices into the Apple HomeKit routines so that you can trigger a specific action when something else happens. For example, when the door is opened, you can turn on specific Wemo devices.