Newer Sonos devices and “rooms” now appear as AirPlay 2-compatible devices, allowing you to stream audio to them via Apple devices. The solution is a long time coming for Sonos which promised AirPlay 2 support in October.
You can stream to Sonos One, Sonos Beam, Playbase, and Play:5 speakers and ask Siri to play music on various speakers (“Hey Siri, play some hip-hop in the kitchen.”) The feature should roll out to current speakers this month.
I tried a beta version and it worked as advertised. A set of speakers including a Beam and a Sub in my family room showed up as a single speaker and a Sonos One in the kitchen showed up as another. I was able to stream music and podcasts to either one.
Given the ease with which you can now stream to nearly every device from every device it’s clear that whole-home audio is progressing rapidly. As we noted before Sonos is facing tough competition but little tricks like this one help it stay in the race.