Box.com is a cloud based file storage service. Box.com provides file sharing, collaborating, and working with uploaded files. Included is a web-based interface as well as a collection of sync apps to aid in synchronization between desktops, smartphones, tablets and more. To find out more about this technology, please read the information at http://www.box.com.
If you are having trouble with Box.com or would like to learn more technical details, please see the knowledge article here.