[Aloisius]

The number of users isn't actually what makes it impressive. At Napster, we had 80 million users at a time where we had 1 backend engineer, 3 web developers, 3 windows developers and 3 mac developers.

But 40 engineers to build apps for web, iOS, android, blackberry, windows phone, a thousand consumer devices, 100 types of cars, etc. is impressive assuming they roll out new features regularly. Even if some of it was done third-party, just the managing new integrations, ensuring feature releases are backwards compatible and testing new releases is still a feat.

I agree the project management style isn't anything special though. Plenty of people use something like scrum with dollar values attached to features.