I get these questions a lot:
- What does it take to be properly licensed for Office Web Apps?
- Are Excel Services, Visio Services and Access Services part of Office Web App offering/licensing model?
- What is the difference between Word Web App and Word Automation Services, as well as between Excel Web App and Excel Services?
Let’s talk licensing first. Office Web Apps have no dependency on your SharePoint licensing model; instead they are licensed with Office 2010 Professional Plus and Office 2010 Standard licenses. If you have volume license for either Office Professional Plus or Office Standard, then you are already licensed for Office Web App. Install the bits on your SharePoint 2010 server or SharePoint Foundation server and enjoy the life…The difference is Office Professional Plus includes the license for SharePoint workspace which standard doesn’t! Office Web Apps only covers the required licenses for Word Web App, Excel Web App, PowerPoint Web App, and OneNote Web App.
Note that Excel Web App is not Excel Services, though they can compliment each other! Excel Services, Word Automation Services, Visio Graphics Service and Access Services are part of SharePoint and licensed with SharePoint , not Office! For example, to use Excel Services you need to either have SharePoint Enterprise CAL (a.k.a eCAL) or the Enterprise license for Internet sites.
The following table summarizes everything making these murky matters look simpler hopefully:
— : Not Applicable
One last thing, in order to purchase an eCAL for SharePoint, you already need to be licensed for standard edition of the product just like Lync 2010.