It is an exciting perspective on Agile development that is used in Spotify.
Crisp’s Blog » Scaling Agile @ Spotify with Tribes, Squads, Chapters & Guilds leads you to the article (in PDF).
Henrik Kniberg and Anders Ivarsson open the books on how Spotify has designed the inner workings. As a matter of fact, the approach is pretty cool. Small groups of like-minded individual from squads, similar to scrum teams and work as if they were a start-up. From there, the Spotify organization differs from that of any larger company. Read more on Crisp’s Blog.