Apple using Amazon S3 storage for iCloud Photo Library

Today I let my gigantic iPhoto library upload to iCloud Photo Library on my Mac. During this process I discovered something interesting — when looking at the site analytics on the network I was using, I noticed that the majority of traffic was being sent to the domain.

After letting about 30GB of photos upload, 27GB were to Amazon servers. I find it interesting that Apple would contract out their cloud storage instead of building out an in-house solution.