Office 365 ADFS Whitepaper

I have had a few customers ask me recently about low level details around how authentication works for Office 365 and Active Directory Federation Services (ADFS). There is a great whitepaper located here that I highly recommend that you read - http://www.microsoft.com/en-us/download/details.aspx?id=28971
I recommend reviewing sections:

• Section 5.2 covers Web Client for SharePoint/OWA authentication flow.
• Section 5.3 covers the Lync authentication flow.
• Section 5.4 covers the Outlook authentication flow.

All are a little different because clients are active vs. passive which determines the flow of how the claim is ultimately sent to Office 365.