Google Drive, not only do you get unlimited storage (enterprise account) but Google Drive links in with all the other Google products. Not only is it easy to store, Microsoft Word and Excel documents (to name a few) on Google Drive, but you can also open them from Google Drive directly. There is no need to be switching between multiple pieces of software, everything works from one place! You also have the ability to convert some of the popular Microsoft formats so they can be used in Sheets, Docs ect. This allows sharing and multiple collaborations. Another very useful feature from a business perspective is the fact you can share folders, this means all the documents with this folder can also be viewed by the selected users. This saves masses of time over sharing each document individually! Google Drive, like many other Google products can be accessed from either Google Chrome or an app on multiple devices! This means stored data can be downloaded, if necessary while away from the computer! Not to mention you have a backup if all your physical documents were to be erased! finally, the ability to star documents makes it easy to view those documents required for everyday use.