Biography of Dean LeffingwellDean Leffingwell is an entrepreneur, executive, author and consulting methodologist who provides agile transformation consulting services to large software enterprises.Recently, Mr. Leffingwell was founder and CEO of consumer marketing identity company, ProQuo, Inc. He also served as chief methodologist to Rally Software (www.rallydev.com) where he focused on the application of agile development methods to large scale software development. Formerly, Mr. Leffingwell served as Sr. Vice President to Rational Software (now IBM's Rational Division), where his responsibilities included development and commercialization of the Rational Unified Process (RUP), ClearQuest, RequisitePro and the company's methodology and product training courses.Mr. Leffingwell has been a student, coach and author of contemporary software development and management practices throughout his career. He is the author of the following books (all form Addison-Wesley and all available on Amazon):Agile Software Requirements: Lean Requirements Practices for Teams, Programs, and the Enterprise (2011), This book provides practical, agile approaches to managing software requirements for teams and teams of teams, as well as practices that scale to the full enterprise architecture and portfolio level. Scaling Software Agility: Best Practices for Large Enterprises (2007), focuses on the application of agile methods to large, distributed development organizations. Managing Software Requirements: First (1999) and Second (2007) Editions. Mr. Leffingwell holds a Masters Degree in Engineering from the University of Colorado in Boulder.From 1993 to 1997, Leffingwell was founder and CEO of Requisite, Inc. , makers of RequisitePro, which was acquired by Rational in 1997. He was also the author of Requirements College, a three day software methods course. Prior to 1993, Leffingwell was founder, chairman and CEO of publicly held Colorado MEDtech, Inc. and it's predecessor company, RELA, Inc., a Boulder-based software, product development and manufacturing outsourcing company.Mr. Leffingwell is an experienced entrepreneur and businessman who has served as a board member at a number of public and private companies throughout his career.He can be reached at deanleffingwell@gmail.com.