Where Apple iCloud Stores Your Files
Not so long ago, an article about assembling a stand for intercepting traffic between iPhone \ iPad \ iTunes and the iCloud cloud service ran through Habré . The article was good and everything in it was correct, but, as one of the comments noted, it is easily replaced by one sentence: “put Charles and add his certificate to trusted ones”. The result will be the same - we will see the decrypted HTTPS traffic.
And here is what we see in Charles’s logs when synchronizing music with iCloud:

Various service requests run to Apple servers, but the file itself is downloaded directly from the Amazon server. Those. this is where your files are stored.
I tend to evaluate Apple’s decision to use Amazon as a file storage rather positively than vice versa. Amazon has already eaten up a dog on cloud services, and using someone else's reliable tool is better than stuffing the bows with the foreheads of its users who have fallen from newly invented bicycles.
PS Once again I’ll clarify - it is only about storing music files. Requests for synchronization of all contacts / calendars, etc. go to the Apple server and I have no idea where the data is physically stored further.
And here is what we see in Charles’s logs when synchronizing music with iCloud:

Various service requests run to Apple servers, but the file itself is downloaded directly from the Amazon server. Those. this is where your files are stored.
I tend to evaluate Apple’s decision to use Amazon as a file storage rather positively than vice versa. Amazon has already eaten up a dog on cloud services, and using someone else's reliable tool is better than stuffing the bows with the foreheads of its users who have fallen from newly invented bicycles.
PS Once again I’ll clarify - it is only about storing music files. Requests for synchronization of all contacts / calendars, etc. go to the Apple server and I have no idea where the data is physically stored further.