Client Application Services is the name of the client and services framework
provided by
ASP.NET 2.0
AJAX Extensions and
.NET 3.5 to configure and develop
.NET Framework Windows clients that can use ASP.NET
application services. Client
Application Services enables multiple Windows and
Web applications to share user
management functionality, such as login, role and profile from a common
server.
See also "Client
Application Services: Getting Started" on
Developer.com.