Peter Eeles, Kelli Houston, and Wojtek Kozaczynski work at Rational Software. Peter is a Senior Technical Consultant in Rational's Strategic Services Organization and assists organizations in their adoption of the Rational Unified Process and the Rational toolset in architecture-centric initiatives. He is coauthor of Building Business Objects (John Wiley & Sons, 1998) and a contributing author to Software Architectures (Springer-Verlag, 1999). Kelli is a Senior Architecture Consultant developing solution packages for accelerating J2EE and NET development. She is a contributing author to Component-Based Software Engineering (Addison-Wesley, 2001). Wojtek is the Director of Architecture and Application Frameworks. He develops tools and processes for the development of architecture frameworks and reusable software assets. He is also a contributing author to Component-Based Software Engineering (Addison-Wesley, 2001).