What Are Smart Home Groups?

Smart home groups let you use Alexa to control multiple devices at once.

You can add multiple types of devices to a smart home group to control lights, music, and other smart home devices.
When you add an Echo device to a smart home group, you can use Alexa to control all the devices in that group. For example, you can create a smart home group for "Living Room." Then say, "Lights on" to turn on all the lights in that group.
Note: Echo devices can only be added to one smart home group at a time.
When creating smart home groups with multiple speakers, you can set a default speaker for music playback.