"What a difference a decade makes. No more than 10 years ago, the traditional knowledge worker had limited options when it came to simple document collaboration and file sharing outside of the office. Now with the consumerisation of IT creating a workforce that is more mobile than ever, the idea of being tied to your desk is archaic. For today's increasingly agile workforce, mobile file sharing and document collaboration is a major requirement."

http://www.computing.co.uk/ctg/opinion/2334844/winning-the-battle-on-mobile-file-sharing