Dean Leffingwell – Recognized as the one of the world’s foremost authorities on Lean-Agile best practices, Dean Leffingwell is an author, entrepreneur, and software development methodologist. His two best-selling books, Agile Software Requirements: Lean Requirements Practices for Teams, Programs, and the Enterprise, and Scaling Software Agility: Best Practices for Large Enterprises, form much of the basis of modern thinking on Lean-Agile practices and principles. Founder of several successful startups, including Requisite, Inc., makers of RequisitePro (acquired by Rational), Mr. Leffingwell also served as Chief Methodologist to Rally Software, and prior to that, as a Sr. Vice President at Rational Software (now part of IBM). He currently serves as Chief Methodologist to Scaled Agile, Inc., which he co-founded in 2011.