The Legends in Marketing series captures the essence of the most important contributions made in the field of marketing in the past hundred years. It reproduces the seminal works of the legends in the field, supplemented by interviews of these legends as well as by the opinions of other scholars about their work. The series comprises various sets, each focused on the multiple ways in which a legend has contributed to the field. This ninth set in the series, consisting of seven volumes, is a tribute to George S. Day. Widely recognized for bringing a rigorous marketing perspective to strategic management issues. He coined to term ?market-driven strategy? which evolved to the more expansive approach to strategy from the ?outside-in.? George S. Day is the Geoffrey T. Boisi Professor, Professor of Marketing and co-Director of the Mack Institute For Innovation Management at the Wharton School of the University of Pennsylvania. He was previously the Executive Director of the Marketing Science Institute. He has been a consultant to General Electric, IBM, Metropolitan Life, Unilever, E.I. DuPont de Nemours, W.L. Gore and Associates, Boeing, LG Corp., Best Buy, Merck, Johnson & Johnson, and Medtronic. He is the past chairman of the American Marketing Association. His primary areas of interest are marketing, innovation management, organizational change, and competitive strategies in global markets. Dr. Day has authored 18 books in of marketing and strategic management. His most recent books are Peripheral Vision: Detecting the Weak Signals that Can Make or Break Your Company (with Paul Schoemaker) 2006, Strategy from theOutside-In: Profiting from Customer Value (with Christine Moorman) 2010, and Innovation Prowess: Leadership Strategies for Accelerating Growth, 2013. He has won 10 best article award and one best book award, and two of his articles were among the top 25 most influential articles in marketing science in the past 25 years. He was honored with the Charles Coolidge Parlin Award in 1994, the Paul D. Converse Award in 1996, the Sheth Foundation award in 2003, and the Mahajan Award for career contributions to strategy in 2001. In 2003 he received the AMA/Irwin/McGraw-Hill Distinguished Marketing Educator Award. In 2011 he was chosen as one of eleven ?Legends in Marketing.? In 2015 he was inducted into the first cohort of AMA Fellows. The series is edited by Jagdish N. Sheth, who is the Charles H. Kellstadt Professor of Marketing in the Goizueta Business School at Emory University, USA. He is Past President of the Association for Consumer Research (ACR), as well as Division 23 (Consumer Psychology) of the American Psychological Association. He is also a Fellow of the American Psychological Association (APA). Professor Sheth is the coauthor of the Howard?Sheth Theory of Buyer Behavior, a classic in consumer behavior published in 1969.