I have a plan to provide user experience to open and edit excel sheets from my web application for which I am conducting research on the WOPI protocol. It's shown at many places like we should be a member of the Office 365 partner program for this. My confusion here is, is it mandatory for users to sign in to Office Online with Microsoft account to track their subscription in this WOPI protocol approach?
Or is it like joining the Office 365 Partner Program would make us capable of using the office for the web? Also, it would be great if someone can tell me where to add WOPI Domain list, and are there any recommendations for the WOPI host server? Is it possible to implement a WOPI host with Python Django or NodeJS technologies?