IIS 7.0 uses a new XML-based configuration store that is modeled after the ASP.NET configuration. IIS configuration is stored in the ApplicationHost.config file and can also be distributed among Web.config files for sites, applications, and directories. Settings configured at one level are inherited automatically by lower levels, unless they have been locked to prevent changes. By default, the server administrator is the only user who has permission to view and edit the ApplicationHost.config file.</p>
Quasi sicuramente IIS 7, disponibile a partire da Windows Vista, disporrà di un file di configurazione espandibile fino a livello web, così come avviene al momento per il file .htaccess su Apache.