Apple's iCloud Runs On Microsoft Azure
Front page first-timer ge7 writes "Apple's recently announced cloud storage and cloud service platform, iCloud, runs on their main competitor Microsoft's Azure platform and Amazon services. According to The Reg's sources, 'Microsoft insiders see the iCloud deal as a validation of Azure. iCloud puts Azure into a different league, given the brand love for Apple and the Apple management's fanatical attitude to perfection. It is a "huge consumer brand, a great opportunity to get Azure under a very visible workload." ... Apple has had a recent unpleasant experience in providing online services: in a famous memo, Steve Jobs admitted his company had "more to learn about internet services" following the outages and failures of his precursor to iCloud for email, contacts, calendar, photos and other files on MobileMe.'"
I guess you've never heard of a little side-project of Apple's called the "iTunes Store"?
It's daily transaction volumes are in the same neighborhood as Amazon's, and it is has been highly available and reliable.
Based on job postings over the years, it's more than likely a combination of various Unixes and Linux. It's definitely NOT Windows (or OS X for that matter).
Speaking of, if you search their job listings for the word "iCloud", almost every hit explicitly mentions Linux or UNIX, and most of the rest mention Perl, Ruby, Python, and other UNIXy applications. I didn't look at every single one of them, but the only one I saw that mentioned Windows at all was for testing the sync to iCloud functionally on Windows. I don't think I'm buying this story.
Sunwalker Dezco for Warchief in 2016