Update overview.md

Author: MicrosoftGuyJFlo

articles/active-directory/conditional-access/overview.md

@@ -87,6 +87,8 @@ After the user has signed in to the federated authentication service, Azure AD h
 
 [!INCLUDE [Active Directory P1 license](../../../includes/active-directory-p1-license.md)]
 
+Customers with [Microsoft 365 Business licenses](https://docs.microsoft.com/office365/servicedescriptions/microsoft-365-business-service-description) can also consume Conditional Access features. 
+
 ## Next steps
 
 To learn how to implement Conditional Access in your environment, see [Plan your Conditional Access deployment in Azure Active Directory](plan-conditional-access.md).