What is Office 365?
Office 365 combines the Microsoft Office Professional Plus client suite with cloud versions of the following products and services:
Microsoft Exchange Online, Microsoft Share Point Online, and Microsoft Lync Online.
The Office Professional Plus offering provides the complete Office client suite as a monthly subscription service. The combination of the Office Professional Plus suite plus the Office 365 services provides the best way for users to collaborate on documents; enables them to work online or offline; and provides access to documents, email, and calendars from almost any device.
The Office Professional Plus subscription allows customers to purchase monthly licenses for each of their users. Each user license allows five concurrent installations. Both 32- and 64-bit versions of Office Professional Plus are available in Office 365. However, we recommend the 32-bit version. After you download Office Professional Plus for Office 365, you can make the Office suite available to users in your organization, based on the number of user licenses that you sign up for.
Office Professional Plus for Office 365 includes the same applications that are available in the Microsoft Office Professional Plus 2010 client suite.
What’s in Office 365?
Depending on the plan that you purchase for Office 365, the subscription license also includes access to Microsoft Share Point Online for viewing and editing documents on the web. Office Web Apps are online companions to Excel, One Note, Power Point, and Word applications that enable users to access and edit documents, regardless of their location. To use the Office Web Apps, users must have an Office 365 plan that includes Share Point Online.