What is Dropbox for Business
Dropbox is a central place for all your files. Devices connected to your dropbox can access the files in it. In that way you always have your files on all your computers, modifying a file on one computer modifies it on all other computers too. You can also share specific folders with colleagues or customers, in that way you can work together smoothly. In practice you simply have an extra folder on your computer (like 'My Documents'). What you put in this folder is shared to your personal devices. Any shared folders in your dropbox are shared instantly to the people you shared it with.