Office Online Server, previously named Office Web Apps, is a server that allows users to view and edit Office documents such as Word, Excel, PowerPoint, and OneNote directly from the browser. Office Online Server also allows users to view PDF documents in the browser, and convert Office documents to PDF.
It’s important not to get confused in Microsoft’s choice of name for the product. Even if it’s called Office Online Server, the product is fully On-Premises, and does not require ...