List or library items in Microsoft Office SharePoint Server can be targeted to appear only to people who are members of a particular group or audience, using audience targeting.
List or library items in Microsoft Office SharePoint Server can be targeted to appear only to people who are members of a particular group or audience. An audience can be identified by using SharePoint groups, distribution lists, or security groups or by using a rules-based system to create a global audience.
Questions tagged audience-targeting regards the development, impementation, use and maintenance of SharePoint target audiences.
Reference: Target content to specific audiences