I've heard Apple using Azure but never heard of their use of AWS. How come this isn't advertised on AWS's or Azure's related page(s)[1]?

[1] Case study pages can be an example for "related page(s)" for AWS: http://aws.amazon.com/solutions/case-studies/ for Azure: http://www.windowsazure.com/en-us/overview/case-studies/arch...

But "for some reason" I can't think Apple sharing their experience with a platform online. It's not in their DNA, I think.