“According to the document, files including photographs, documents, contacts, and other items, are broken into chunks when stored within iCloud, with each chunk encrypted using AES-128, using a key derived from each chunk’s contents using SHA-256. While the keys and the file metadata are stored by Apple in the user’s iCloud account, the encrypted file chunks are handled by the third-party cloud services, without any user-identifying information passed along to the storage vendors.”
What Google can see are all nonsensical encrypted data that can not be linked to specific individuals. Apple did not specify the use of third-party servers, it is possible that the same user data will be stored scattered to other platforms.
Source: appleinsider
