Customers with a Volume Licensing account can download Office Online Server (OOS) from the Volume License Servicing Center at no cost and will have view-only functionality, which includes PowerPoint sharing in Skype for Business.
Office Online Server (OOS), was released May 4th, OOS allows organizations to deliver browser-based versions of Word, PowerPoint, Excel and OneNote, among other capabilities. Microsoft recognizes that many organizations still value running server products on-premises for a variety of reasons. With OOS, you get the same functionality offered by Microsoft with their Office Online environment in your own datacenter.
OOS is the successor to Office Web Apps Server 2013. Customers that require document creation, edit and save functionality in OOS will need to have an on-premises Office suite license with Software Assurance or an Office 365 ProPlus subscription.
Customers that purchase an on-premises Office 2016 suite through Volume Licensing before August 1, 2016 will be exempt from the Software Assurance requirement through August 1, 2019. For more information on licensing requirements, please refer to the Microsoft Product Terms.