What Is an Audience?
You can associate audiences independently for each .NET search interface when you add them to a .NETsearch hub. When accessing a .NET search hub, a user only sees the user interfaces associated with audiences for which he or she is a member (see Adding Search Interfaces to a Search Hub With the .NET Interface Editor).
Example: You can create an audience grouping all the employees from the marketing department. You create a .NET search interface to meet the search needs of this department. When you add the .NET search interface to the .NET search hub, you assign this audience to the .NET search interface so that only marketing department users can see this interface.