Office 365 / EWS Authentication using OAuth

Question

I\'m trying to log onto Office 365 Exchange Online using OAuth and EWS Managed API.

I am able to use connect to the Office 365 Web API\'s (REST), so I do have a vali

Answer 1

You can use saml if from a certified domain of the aad, and you swap that token using the ms online sts. I did this, and its trivial to find my writeups on the web.

Interested to dump it all and now use an aad issue access token.

The older model is cute in some ways, as you are not tied to aad oauth, for your own app, only becoming tied to aad land when talking to microsoft properties. If one has, with openid connect, a vendor mobile token (a tgt, in all but name), perhaps i can live with some codependence.

So i have an aad (netmagic.onmicrosoft.com), with certified domain registration (rapmlsqa.com). Do i go make a webapi class app in aad, assign THAT the office permissions?