Virtual hosting allows you to define host names that servers or clusters respond to.
When you use virtual hosting you use DNS to specify one or more host names that map to the IP address of a WebLogic Server instance or cluster, and you specify which Web Applications are served by the virtual host.
When used in a cluster, load balancing allows the most efficient use of your hardware, even if one of the DNS host names processes more requests than the others.
For example :-
you can specify that a Web Application called books responds to requests for the virtual host name www.books.com, and that these requests are targeted to WebLogic Servers A,B and C, while a Web Application called cars responds to the virtual host namewww.autos.com and these requests are targeted to WebLogic Servers D and E.
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