Esther Derby is a Senior Consultant with Cutter's Business Agility & Software Engineering Excellence practice. She is a recognized leader in the human side of software development, including management, systems thinking, organizational change, collaboration, team building, facilitation, and retrospectives. Since 1997, she has run her own consulting firm, Esther Derby Associates, Inc. Ms. Derby helps managers create the conditions for success and works with companies that want to do better at delivering valuable software to customers. She is an expert in team and organizational dynamics and a leading thinker on managers' roles in Agile organizations. Ms. Derby is the author of more than 100 articles and coauthor of Agile Retrospectives: Making Good Teams Great and Behind Closed Doors: Secrets of Great Management. She is a founder of the AYE Conference and currently serves on the board of directors of the Agile Alliance. Ms. Derby has a master of arts degree in organizational leadership and a certificate in human system dynamics. She can be reached at firstname.lastname@example.org.