Jack Greenfield is a senior staff engineer at Google, where he leads a team working on the Google Cloud Platform. Formerly, Jack was a distinguished architect and senior director at eBay, PayPal, and X.commerce, where he led work on services portfolios, identity management, and B2B commerce. A popular speaker and writer, he is the coauthor of two books: BOLT: A Business Strategy Methodology and Software Factories: Assembling Applications with Models, Patterns, Frameworks and Tools, winner of the 2004 Jolt Productivity Award. He has also contributed to UML and J2EE standards. He holds a BS in physics from George Mason University.