IIS 7.0 is quite different from IIS 6.0. IIS 7.0 has the following advantages over IIS 6.0. We can have control on modules that we want to execute on the server, customize the web server based on our needs, extend the modules that are currently available and use custom modules.

Recalling my first article on IIS 6.0, we discussed the service World Wide Web Publishing Service (WWW Service). “This is the core service of IIS. This hosts internet and intranet, connects to all the clients though HTTP requests. It uses and configures the HTTP protocol Stack and worker process for the same. It also monitors the health of worker process.” In IIS 7.0 there are some changes to the Windows Web Publishing Service (WWW service). In IIS 7.0, WWW service is no longer responsible for managing the worker processes. Instead, the WWW service is currently responsible for configuring HTTP.sys.