Which of the following will allow an organization to integrate internal identity management services with a cloud
provider in order to provide single sign-on across the internal and cloud-hosted environments?

A.
Virtualization

B.
Federation

C.
Role-based authentication

D.
Outsourcing

Explanation:
Azure AD supports three different ways to sign in to applications:
Federated Single Sign-On enables applications to redirect to Azure AD for user authentication instead of
prompting for its own password. This is supported for applications that support protocols such as SAML 2.0,
WS-Federation, or OpenID Connect, and is the richest mode of single sign-on.
Password-based Single Sign-On
Existing Single Sign-On
https://azure.microsoft.com/en-us/documentation/articles/active-directory-appssoaccess-whatis/