How Spotify Works | Pansentient League - a Spotify Blog
http://pansentient.com/2011/04/spotify-technology-some-stats-and-how-spotify-works
#Spotify is the only on-demand music #streaming service that’s not web-based. Instead, it uses a #peer-to-peer network (#p2p) that can scale up to meet the demands of millions of users.
http://pansentient.com/wp-content/uploads/2011/04/spotifty-network.jpg