From http://www.w3schools.com (Copyright Refsnes Data)
This tutorial has taught you how to create WSDL documents that describes a web service. It also specifies the location of the service and the operations (or methods) the service exposes.
You have learned how to define the message format and protocol details for a web service.
You have also learned that you can register and search for web services with UDDI.
The next step is to learn about SOAP and Web Services.
SOAP
SOAP is a simple XML-based protocol that allows applications to exchange information over HTTP.
Or more simply: SOAP is a protocol for accessing a web service.
If you want to learn more about SOAP, please visit our SOAP tutorial.
Web Services
Web services can convert your applications into web-applications.
By using XML, messages can be sent between applications.
If you want to learn more about web services, please visit our Web Services tutorial.
From http://www.w3schools.com (Copyright Refsnes Data)