Update multilateral-federation-solution-two.md

Author: janicericketts

articles/active-directory/fundamentals/multilateral-federation-solution-two.md

@@ -20,7 +20,7 @@ In Solution 2, Azure AD acts as the primary IdP and the federation provider acts
 
 [![Diagram showing Shibboleth used as a SAML proxy provider.](media/multilateral-federation-solution-two/azure-ad-shibboleth-as-sp-proxy.png)](media/multilateral-federation-solution-two/azure-ad-shibboleth-as-sp-proxy.png#lightbox)
 
-Azure AD is the primary IdP so all student and faculty apps are integrated with Azure AD. All Microsoft 365 apps are also integrated with Azure AD. If Active Directory Directory Services (AD) is in use, then it also is synchronized with Azure AD.
+Azure AD is the primary IdP so all student and faculty apps are integrated with Azure AD. All Microsoft 365 apps are also integrated with Azure AD. If Active Directory Domain Services (AD) is in use, then it also is synchronized with Azure AD.
 
 The SAML proxy feature of Shibboleth integrates with Azure AD. In Azure AD, Shibboleth appears as a non-gallery enterprise application. Universities can get single sign-on (SSO) for their CAS apps and can participate in the InCommon environment. Additionally, Shibboleth provides integration for Lightweight Directory Access Protocol (LDAP) directory services.