I'm reading through the docs, but not quite understanding the architecture. Is Amazon S3 specially privileged over the other cloud services, or is it just being used as an example? Do all file requests mediated by the Filepicker.io servers, or can one go straight from browser to 3rd party storage?
Currently S3 is the only support backend storage. More are on the way. We take requests from customers seriously and so far we've heard rackspace, google, and dropbox. Feel free to send me an email at liyan@filepicker.io with your preference.
All files are mediated by fp.io. This lets us do interesting thing like implementing tcp/ip on tcp/ip. That is, we chunk up large files into manageable bits, retry, and reassemble on our servers.
