Dean Leffingwell is recognized as the one of the world’s foremost authorities on Lean-Agile best practices, he is an author, entrepreneur, and software development methodologist.  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.