Christoph Schittko is an architect for Microsoft who works with customers building service-oriented architecture (SOA) solutions on the Microsoft platform. Before joining Microsoft, he assisted with companies adopting service orientation or delivering Software-as-a-Service (SaaS) solutions. Thomas Erl is the world's top-selling SOA author, founder and editor of The SOA Magazine, and founder of SOA Systems Inc., a company specializing in vendor-agnostic SOA training, certification, and strategic consulting services. He speaks and instructs widely, and has delivered many workshops and keynote speeches. His work has been published in publications including The Wall Street Journal.