Michael E. Porter is the Bishop William Lawrence University Professor at Harvard University. He is a frequent contributor to Harvard Business Review and a six-time McKinsey Award winner. Joan Magretta is a senior associate at the Institute for Strategy and Competitiveness at Harvard Business School, a McKinsey Award winner, and author of What Management Is, a top pick of its year by the Economist. She was a Bain partner and strategy editor of Harvard Business Review. Mark R. Kramer cofounded FSG, a global social impact firm consulting firm, with Professor Porter and is its managing director. He is also a senior fellow of the CSR initiative at Harvard’s Kennedy School of Government.