Intrinsic Server Objects

Response - An instance of HttpResponse class, this object provides access to the output stream for the current page. Used for writing text into the page or for creating cookies.

Request - An instance of HttpRequest, this object provides access to the current page request, including request headers, cookies, client certificates, and a query string.

Context - An instance of HttpContext, this object provides access to the entire current context, which includes the Request object. You can use the HttpContext class to share information between Web pages.

Server- An instance of HttpServerUtility, it provides utility methods that you can use to transfer control between pages, get information about the most recent error, and encode and decode HTML text.

Application - An instance of HttpApplicationState , it provides access to application-wide methods and events for all sessions.


Soure of Reference- MSDN