Office 365 and Rebex Graph with OAuth 2.0 authentication in unattended (app-only) mode: How to make it work
App-only authentication is used for services/daemons with no singed-in user present. This step-by-step guide shows how to make it work.
Graph
How to use OAuth 2.0 authentication for Office 365 with Rebex Graph in delegated mode (with a signed-in user)
This article provides step-by-step guide to making it all work.
How to register your app for Office 365 with OAuth 2.0 authentication
Describes how to register a desktop or mobile application using delegated access.