Earlier quoted context omitted.
Are they all on EC2? Maybe EC2 is throwing a fit.
Amazon is, but Apple and Facebook both operate their own data centers. Edit: I take that back, Apple uses several cloud providers, including AWS.
> The encrypted chunks of the file are stored, without any user-identifying information, using third-party storage services, such as Amazon S3 and Windows Azure.
[0]: https://www.apple.com/business/docs/iOS_Security_Guide.pdf