What is impersonation?

Impersonation is commonly used in applications that rely on Microsoft Internet Information Services (IIS) to authenticate the user.   


you must include an tag in the Web.config file of this application and set the impersonate attribute to true. For example:

configuration
  system.web
    identity impersonate="true"
  system.web
configuration

When impersonation is enabled, only your application code runs under the context of the impersonated user. Applications are compiled and configuration information is loaded using the identity of the ASP.NET process.

You can also add support for specific names to run an application as a configurable identity, as shown in the following example:

  
identity impersonate="true"   userName="contoso\Jane"   password="********"