Wow, Windows Azure seems to be beating it by a long way. Genuine surprise... I assumed it would be much closer.

9 months ago, they announced they stored twice this amount - 4 trillion objects. A year before that, 1 Trillion. Given that previous rate of growth, we can expect they have a lot more than this now.

They also announced peaks of 880,000 requests a second. Whilst Amazon wins here, I'd say its fair to assume this number has increased in those 9 months.

http://blogs.msdn.com/b/windowsazurestorage/archive/2012/07/...