We get the occasional licensing question related to Microsoft Office Web Application Server, and what needs to be purchased if anything to stay in compliance. This post is just to put your mind at ease, if you’re running it for Lync, you’re likely running it in a view only mode. From the TechNet Article, Plan Office Web Apps (Used with SharePoint 2013), Microsoft explains the following: Office Web Apps licensing offers two options:
- View-only. By default, Office Web Apps is view-only. View-only functionality is provided for free.
- Edit and view. You must purchase an editing license to use the editing features of Office Web Apps with SharePoint 2013. You enable editing when you create the Office Web Apps Server farm.
Check out the following article for more information on the subject: http://blogs.technet.com/b/volume-licensing/archive/2013/05/22/how-to-license-office-web-apps-server.aspx