Microsoft Online Services Sign-In Assistant
The Microsoft Online Services Sign-In Assistant is a software application that provides common sign-on capabilities for a suite of Microsoft online services, such as Office 365.
The Microsoft Online Services Sign-In Assistant is not designed or intended to function as a global single sign-on (SSO) platform, but it provides limited common sign-on functionality across a suite of applications to eliminate the need for users to re-enter credentials for each online service.
In addition to Office 365, the Microsoft Online Services Sign-In Assistant supports Azure Active Directory Module for Windows PowerShell, Outlook 2010 when connecting to Exchange Online, Skype for Business and more.