How do I set up Intro with Office365 OAuth?
This guide covers how to setup a Microsoft OAuth application to start authenticating O365 users via OAuth.
Steps
1. Creating an OAuth application
The first step is to create an app that will be used to authenticate your Intro account to Office365. To do that we're going to use the Azure web portal. Head to https://portal.azure.com and login with your email and email password. You should be presented with the following screen:
In the menu on the left, click “Azure Active Directory”:

Then “App Registrations”:

Then click "New Registration".
You're going to be presented with the following screen. Set your name to your app's name. Set the audience for this app to "Account in any organizational directory" to be able to log in any account using Office365. You can also restrict it to internal accounts ("Accounts in this organizational directory only") if you're building an internal app.