I have been using web services for a while and have used both approaches bottom-up and top-down. In both cases we have deployed the web service to app server and release the URL which in-turn is used by the calling web service client. In all these cases client knows the actual URL of the web services they want to consume. Recently I read about location independent web services and dynamic discovery and would like to know how this is actually practiced in the real world.
How can I deploy my web service to be location independent and how clients can dynamically discover without having the knowledge of the existence and interface of the web service they are invoking. Is this something similar to the Service Locator design pattern