How Business Strategies Add Value. What distinguishes the successful firm is the fundamental question in business strategy, and one the most senior managers consistently ask themselves. In Foundations of Corporate Success, John Kay argues that outstanding businesses derive their strength from a distinctive structure of relationships with employees, customers, and suppliers. He explains why continuity and stability in these relationships is essential for a flexible and co-operative response to change. This book has been hailed as a landmark in our understanding of business strategy and is widely used on courses throughout the world.