News.com asks the question, and adds: “Web services can be implemented in basically two ways–either by exposing an application interface as a Web service or as a “document-based” Web service. One is not as good as the other….The alternate approach of document-based Web services, also known as “messaging style” Web services, provides several capabilities that make it more viable.”
While I don’t understand the article, I think its important to read and remember.