IIS Express

1. folder for iisexpress.exe

C:\Program Files (x86)\IIS Express

2. folder for website

C:\Users\Steve\Documents\My Web Sites

3. folder for configuration file : applicationhost.config

C:\Users\Steve\Documents\IISExpress\config

<site name="WebSite2" id="1" serverAutoStart="true">
                <application path="/">
                    <virtualDirectory path="/" physicalPath="%IIS_SITES_HOME%\WebSite2" />
                </application>
                <bindings>
                    <binding protocol="http" bindingInformation=":8081:localhost" />
                </bindings>
</site>