Spotify - Connect
Spotify Connect lets you tune in from a range of WiFi, Bluetooth, Chromecast, or AirPlay devices, no matter where you are.
Playing with the Spotify Connect API, by José M. Pérez
What is Spotify Connect and how does it work?
GitHub - librespot-org/spotify-connect-resources: A repository to hold any data/stuff related to reversing the Spotify Connect protocol. Mostly just data dumps at the moment, but if you have something to add to it
Spotify Connect lets you control and play music from any device - The Verge
What Is Spotify Connect? How to Use Spotify Casting
Spotify Connect: What It Is & How to Use It
Spotify Connect - MusicMultiroom
HomePod with Spotify Connect, it is possible!
What is Spotify Connect? The streaming service's best feature explained
How to use Spotify Connect to Cast Music on your Android TV
WiFi Internet Digital Radio Speaker with Spotify Connect, Bluetooth Rimini Wood
Syng
WiiM Mini no longer appearing under Spotify's list of devices after latest firmware update