Dropbox and Microsoft are teaming up to integrate Dropbox into Office
MS files to store in DropBox and use directly from there. With this features DropBox users to link their account directly to the Word, Excel, and PowerPoint iPad apps.Users can save files to DropBox and edit files from there. Even though MS have OneDrive cloud storage,Microsoft looks into 30,00,00,00(30Crore)DropBox users from this deal.
Read my previous blog for DropBox