Arun Poduval works as a Technical consultant at Midwave Corporation specialized in SOA/Middleware. Doug Todd is CTO of Enterra Solutions in Yardley, PA. He has more than 20 years of experience in systems architecture, applications architecture, systems integration, and applications integration with major corporations. Todd is responsible for Enterra's overall IT strategy and tactical implementation, enterprise information architecture, and technology product offerings. Doug Todd worked on Chapter 5. Harish Gaur has more than 13 years of experience in the enterprise software industry including 7+ years at Oracle. He is currently the Director of Product Management for Fusion Middleware at Oracle. In his current role, he works closely with strategic customers implementing SOA & BPM using Oracle Fusion Middleware. He is co-author of BPEL Cookbook (2007) and Fusion Middleware Patterns (Sept 2010) Before Oracle, he worked as a Solution Specialist with Vitria Technology educating customers about the benefits of Business Process Management. Prior to that, he helped Fortune 500 companies architect scalable integration solutions using EAI tools like webMethods and CrossWorlds (now IBM). Harish holds an engineering degree in Computer Science and is an MBA from Haas School of Business, UC Berkeley.