This specification builds on the WS-Security, WS-Trust, and WS-SecureConversation specifications to integrate Kerberos functionality.

Some programs depend on a distinction between a null array and an empty array. What is often used to represent arrays in XML schemas does not have any such distinction. Is there anything you can do to get around this feature of XML? This article will show you.

I confess: when it comes to XML and web services, I am a Big Picture person. There are hundreds of angle-bracket jockeys in the XML development community, to whom we can all look for the ins and outs of particular XML technologies. But the job of the XML-Deviant column, as I understand and practice it, is to focus the collective intelligence of the XML development community on the Big Picture.

This article gives an overview of the various technologies and routes available for mobile web service development.

By taking small steps, first consuming information from multiple web services, and then exposing newly processed information via your own web services, we can begin to build complex applications in our spare time, with very few resources required up front. All Consuming is one such application that's built on top of free services offered by weblogs.com, blo.gs, Google, and Amazon; it offers an interesting slice of the book life that exists on the Web and in the world.

Web services are becoming an important tool for solving enterprise application and business-to-business integration problems. An enterprise application is usually exposed to the outside world as a single monolithic service, which can receive request messages and possibly return response messages, as determined by some contract. Such services are designed according to the principles of a service-oriented architecture. They can be either stateless or stateful. Stateful services can be useful, for example, for supporting conversational message exchange patterns and are usually instance or session-based, but they are monolithic in the sense that the session instantiation is always implicit.

This first article in three part series describing transactional web services introduces the service oriented architecture, federation of web services, and the need for coordination and transactions

In the first article of this series, I explained why traditional network firewalls are inadequate to provide security to web service applications, which is why we need to implement web service security at the XML messaging layer.

Web services are causing a radical shift in the computing industry. Universal Description, Discovery and Integration (UDDI) is an essential building block in that shift.

NetTool is a free debugging utility, useful for monitoring and testing web services. Read this article to learn what it does, and how to download it