Interesting comment:
Autodesk Remote is another option, at least for Autodesk Subscription customers. I’ve used it in conjunction with Dropbox / Google Drive to remote and transfer files
Posted by: Aurbis
Along similar lines – Using Autodesk 360 for file sharing, including an embedded viewer:
http://www.cad-notes.com/sharing-files-and-designs-with-autodesk-360/