IBM developerWorks just released a interview with Rod Smith, VP of IBM Emerging
Technologies, about Web Services, a model for doing development where they
use XML messaging and SOAP to talk to each other.

An architecture overview and interview with Rod Smith
Introducing IBM's Web Services, a distributed software architecture of service
components. This brief overview and in-depth interview cover the fundamental
concepts of Web Services architecture and what they mean for developers.
The interview, with IBM's Rod Smith, Vice President of Emerging Technologies,
explores which types of developers Web Services targets, how Web Services
reduce development time, what developers could be doing with Web Services
now, as well as a glance at the economics of dynamically discoverable services.,p=x.webSer

There's also two articles on XML Matters
xml_pickle and xml_objectify,p=x.Matters1,p=x.Matters2