Does the sebservice request go via a webserver or just the app server?

Hi,
In most cases, a regular http (eg.: www.yahoo.com) request goes through the web server and then the app server and vice-versa for the response.
Can we say the same about a webservice request or is that only the app server comes into the picture in this case?
I came to learn that SOAP rides over HTTP, so in essence, when a traditional web service uses SOAP, I figured that it is using HTTP and therefore can be routed through a http server (or in other words, a Web server).No?
Needless to say, I am a newbie at web services.
This question has been bugging me for a while.

You seem to be assuming that all sites are configured with a static web server that fronts a dynamic app server. But this is not always the case. In many cases, what you are calling an "app server" (and the meaning of this term seems to be in perpetual flux), serves static as well as dynamic requests.

So the answer is: it all depends upon how the site is configured.

Thanks for your response.
I am back from holidaying all this while.
Ok, let's say we have web server and a appserver.
Can the webservice request be routed through the webserver now (meaning if I give http://<webserver_name>/..., will it work and the webservice duly routed to appserver)?