Web Services are applications delivered as a SERVICE on the Web. Web services allow for programmatic access of business logic over the Web. Web services TYPICALLY rely on XML- based protocols, messages, and interface descriptions for communication and access. Web services are DESIGNED to be used by other programs or applications rather than directly by end user. Programs INVOKING a Web service are called clients. SOAP over HTTP is the most commonly used protocol for invoking Web services.

Web Services are applications delivered as a service on the Web. Web services allow for programmatic access of business logic over the Web. Web services typically rely on XML- based protocols, messages, and interface descriptions for communication and access. Web services are designed to be used by other programs or applications rather than directly by end user. Programs invoking a Web service are called clients. SOAP over HTTP is the most commonly used protocol for invoking Web services.