A Web service extension is an IIS feature that extends the basic IIS functionality beyond serving static content. Examples of Web service extensions are active server pages (.asp), ASP.NET, and server-side includes (SSI).

InstallShield lets you add Web service extensions to your installation. When you select a Web service extension in this view, you can configure the IIS settings that are associated with the Web service extension.

Web service extensions are available only on machines with IIS 6.0 or later installed.