<p>Impersonation is the concept whereby an application executes under the context of the identity of the client that is accessing the application. This is achieved by using the access token provided by IIS.</p> <p>Can impersonate entire website by editing the web.config or impersonate chunks of code in the codebehind.<br /> <strong>Very usefull when accessing folders on a remote server that has no domain</strong></p>