Extranet User Manager (EUM) is an application that provides a robust set of administrative and end-user features to enable collaboration with external users. EUM is typically implemented in two main scenarios, EUM Native and EUM B2B. In EUM Native, the application is a federated identity provider which provides authentication and single sign on capabilities allowing you to control the entire onboarding process of an external user. In EUM B2B, in order to work with Office 365 services, EUM integrates with Microsoft's Azure Active Directory Business to Business (Azure AD B2B). In this deployment method, EUM provides all of the enhanced onboarding functionalities and Azure AD provides user authentication. Learn more about Extranet User Manager at https://www.extranetusermanager.com/.