JAMES McGOVERN, Enterprise Architect for Hartford Financial Services, is a co-author of the bestselling books Java Web Services Architecture and Agile Enterprise Architecture. SCOTT W. AMBLER, senior consultant with Ronin International, specializes in O-O analysis/design, agile modeling, and architectural audits of mission-critical systems. His best sellers include Agile Modeling and The Elements of Java Style. MICHAEL E. STEVENS, Software Architect for Hartford Financial Services, is a columnist for Developer.com. He co-authored Java Web Services Architecture. JAMES LINN, consultant at Hartford Technology Services, co-authored XQuery Kick Start. VIKAS SHARAN is managing partner of Lozoic and architecture team member at Baypackets. ELIAS JO, Systems Architect for The New York Times Digital, has architected and/or led development at DeutscheBank, Citibank, Standard & Poor, and ADP.