Does IS contain Apache web server?

Hi all,

I know that IS has Apache Tomcat 5.0 as a JSP container
but not really sure if it is based on Apache for the web server function.
If it does what version would that be? (IS6.5)
If not how does IS works on web? (i.e. own HTTP listener)

Like Apache Tomcat …it is Wm Tomcat… but the bundle remains same…

and web server is going to be webMethods which is not actually replacing tomcat …instead just does an out of box extended support