https://techcrunch.com/2018/02/27/apple-now-relies-on-google-cloud-platform-and-amazon-s3-for-icloud-data/

It’s no secret, Apple has been relying on third-party cloud companies for iCloud. And CNBC spotted an interesting tidbit in Apple’s own documents. The company now relies on Amazon S3 and Google Cloud Platform’s storage product to store iCloud data.

Back in 2016, CRN reported that Apple signed with Google for cloud storage. But Apple’s document represents the first official confirmation that this deal happened.