From http://www.w3schools.com (Copyright Refsnes Data)
Web Services can convert your applications into Web-applications.
By using Web services, your application can publish its function or message to
the rest of the world.
Web Services can be used by other applications.
With Web services your accounting department's Win 2k servers
can connect with your IT supplier's UNIX server.
The basic Web Services platform is XML + HTTP.
Web services uses XML to code and decode your data and SOAP to transport it.
Learn how to create Web Services from an ASP.NET application.
This tutorial converts an ASP.NET application to a Web Service.
Start learning about Web Services now!
Web Services Introduction - An introduction to Web Services.
Why Web Services? - Why and how to use Web Services.
Web Services Platform - What lies behind the Web Services Platform?
Web Services Example - A Web Service example.
Web Services Use - Add a Web Service to your web page.
Web Services Summary - A summary on what you have learned in this tutorial and a recommendation on what subject you should study next.
From http://www.w3schools.com (Copyright Refsnes Data)