Spotify uses Chromium embedded for their desktop clients and webviews for their mobile clients, so that's largely one codebase for 6+ clients. A lot of the ext

Spotify uses Chromium embedded for their desktop clients and webviews for their mobile clients, so that's largely one codebase for 6+ clients. A lot of the external frontends are also not made by spotify themselves, but implemented by the manufacturer through Spotify's SDK. You still want a bunch of dedicated staff to support all that, but it's not as dramatic as it could be.