Introduction to ApplicationHost.config : Understanding XML Configuration : Planning Your IIS 7 Architecture : The Official Microsoft IIS Site
Introduction ApplicationHost.config is the root file of the IIS 7.0 configuration system. It includes definitions of all sites, applications, virtual directories and application pools, as well as global defaults for the web server settings (similar to machine.config and the root web.config for .NET Framework settings). It is also special in that it is the only IIS configuration file available when the web server is installed (however, users can still add web.config files if they want to). It includes a special section (called configSections) for registering all IIS and Windows Activation System (WAS) sections (machine.config has the same concept for .NET […]
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