When you connect a Windows 10 Pro or Enterprise desktop system directly to Office 365 (thanks to Azure AD) you get seamless login to Office 365 without multiple password prompts.
It also allows you to directly login to the Windows 10 Pro machine with your Office 365 credentials. After that when you navigate to Office 365 in Microsoft Edge or Internet Explorer you’ll automatically be logged into the service. If you also add the following extension to Chrome:
https://chrome.google.com/webstore/detail/windows-10-accounts/ppnbnpeolgkicgegkbkbjmhlideopiji?hl=en
You’ll get the same functionality.
This ability and integration is one of the real benefits of connecting Windows 10 to Office 365 (via Azure AD). This video will show you how to take a stand alone desktop and connect it directly to Office 365 and get single sign on to Office 365.
CIAOPS 