Some questions regarding licensing... Do I need SP Enterprise?
And what license (If there are options) do i need for Office Online Server? The users has O365 E3 licenses so they should not need cals should they? (Nope, SPOnline is not an option, Cubes is too big to sync)
I need Office Online server to co-collaborate on excel? Do I need SharePoint Enterprise or Office Online server to connect a spreadsheet running on SharePoint to a SSAS Cube?
Customers that have purchased Office 365 Pro Plus subscriptions or Software Assurance (SA) with an Office licensing suite will have OOS rights for document creation, editing, and save functionality. Other volume licensing customers, except those who have purchased Open licenses, can download OOS with view-only functionality
Microsoft Office Online Server offers view-only access to Office documents on an Internet browser. For editing of Office documents, you need Software Assurance for an Office suite license acquired through Volume Licensing. The single primary user* of an Office licensed device can edit documents using Office Online Server from any device, including those not licensed for Office. External users** don’t need an Office suite license to view or edit Office documents on an Internet browser.
8. Do my employees need an Office Professional Plus 2019, Office Standard 2019, or Office for Mac 2019 license for viewing only Office Online documents? No. Office suite licenses with Software Assurance are only required for those employees editing Office Online Server documents.