Exchange helps raise your productivity by allowing you to manage increasing volumes of communications across multiple devices, and work together more effectively as teams.
Office 365
UNIT offers Microsoft's Office 365 to the Villanova community. The cloud-based version of the Microsoft Office desktop suite includes Word, Excel, PowerPoint, OneNote and OneDrive. This initiative provides users with increased storage using Microsoft OneDrive (OneDrive-Villanova University).
Where to find it: http://office.villanova.edu
Login using your Villanova UserID (MyNova) and password.
View the Office 365 FAQ

Office Online is an online Microsoft Office suite offered by Microsoft, which allows users to create and edit files using web browser-based versions of Word, Excel, OneNote, and PowerPoint. Office Online Provides “light weight” versions of Microsoft Office, which means that only the most-used features are available.
More information:

OneDrive for Business is your personal cloud storage in Office 365. When you create and store files on OneDrive for Business, you can easily synchronize and access them across multiple devices, and share them with others.
Microsoft offers limited support for this version of the 'Sync Client'. For more information, please follow the link to the Sync Client FAQ below.
Watch an Introduction to OneDrive video.