Your company network includes users in multiple directories. You plan to publish a software-as-aservice application named SaasApp1 to Azure Active Directory. You need to ensure that all users
can access SaasApp1. What should you do?

A.
Configure the Federation Metadata URL.

B.
Register the application as a web application.

C.
Configure the application as a multi-tenant.

D.
Register the application as a native client application.

Explanation:
* When you get deeper into using Windows Azure Active Directory, you’ll run into new terminology.
For instance, is called “directory” is also referred to as a Windows Azure AD Tenant or simply as
“tenant.” This stems from the fact that WAAD ()Windows Azure Active Directory is a shared service
for many clients. In this service, every client gets its own separate space for which the client is the
tenant. In the case of WAAD this space is a directory. This might be a little confusing, because you
can create multiple directories, in WAAD terminology multiple tenants, even though you are a single
client.
* Multitenant Applications in Azure. A multitenant application is a shared resource that allows
separate users, or “tenants,” to view the application as though it was their own. A typical scenario

that lends itself to a multitenant application is one in which all users of the application may wish to
customize the user experience but otherwise have the same basic business requirements.
Examples of large multitenant applications are Office 365, Outlook.com, and visualstudio.com.
http://msdn.microsoft.com/en-us/library/azure/dn151789.aspx