The integration is complete different in AS7.
You will find a subsystem "web" in the configuration. (WildFly 8 uses a new implementation called "undertow")
The configuration for mod_cluster is in the related subsystem, see mod_cluster in AS7
Thanks alot Wolf . So does this mean that I need to have a separate apache httpd server running which will send request to the Jboss application cluster or I can configure the jboss web server packaged with Jboss AS 7?
Yes, for http requests you need a instance for loadbalancing in front.
EJB's remote invocations are different, there you have a proxy and a client side library to handle that.