HomePod – Official Apple Support

Use HomePod as an intercom If you have two or more HomePod or HomePod mini speakers, you can send Intercom messages throughout your home. See how to set it up Set up a home hub With a home hub, you can control your HomeKit accessories remotely, grant access to the people you trust, and automate your accessories. Learn how it works Using Siri

https://support.apple.com/homepod