This document summarizes information about implementing Office Online Server. Office Online Server provides online editing capabilities for documents across SharePoint 2016, Exchange 2016, Skype for Business 2015, and other document stores. It replaces Excel Services and provides backward compatibility. Setting up Office Online Server only requires installing the software, using PowerShell commands to configure the farm URL and join additional servers, and connecting SharePoint using PowerShell. The server supports up to 20,000 users and any load balancer can be used.