It is extremely easy to use as well as keep all the files we receive each day up to date and organized for employees from across all of our offices can access on demand.
The only thing I particularly dislike is the fact that it sometimes only allows you to be logged into one window at a time. This slows down my workflow as I need to be in many folders at the same time to pull files.
It certainly makes collaboration across a nationwide company easier. I'm not sure if it is the best cloud service for documents, but it is certainly a good choice.
The problem that is being solved is data storage and collaboration ability across all of our employees that are throughout the country