This lecture describes a vision in which programs written in different languages, running on different platforms, and connected via different network transports can discover one another and communicate.

• The SOA Vision and the needed infrastructure
• Terminology: service, port, binding, port-type, operation, message, part.
• Reading a WSDL and identifying tns, service, and port
• Building a client using a platform: AXIS
• Building a client from scratch: SOAP

• Deploying a web service
• Data persistence
• XSD Returns
• Complex Returns

• Read Section 9.1 for an introduction, Section 9.4 on WSDL, and Section 9.6 on SOAP. Skip the other sections of Chapter 9 for now.
• Take a tour of some wsdl documents (xmethods, strikeiron, fraudlabs, etc.) and familiarize yourself with their contents.
• Create a client that consumes a web service along the lines of the AXIS and/or HTTP clients in the Resource Directory.
• Create your own web service and deploy it.