Business Challenge
You have a company file that someone else needs access to. That may be one person across the office or 10 people all over the globe.
If you are just trying to share your company file with your bookkeeper, the sending of that file over email (or with a USB stick) can result in two people working on different versions of the same file. If you are trying to set up remote, simultaneous, multi-user access you can waste a lot of time and money getting set up with a complex, difficult to maintain solution.