Jeffrey Rayport teaches MBAs and executives as a faculty member in the Entrepreneurial Management Unit at Harvard Business School. His MBA courses include Scaling Technology Ventures and Systems for Scaling Ventures, both second-year electives at the School.Jeffrey consults, speaks, and writes on various business topics, including digital technologies in media, marketing, and services; new strategies for customer engagement; and achieving competitive advantage in service sector businesses. He is the founder of Marketspace LLC, a digital strategy and advisory firm, and co-founder of Monitor Executive Development (both now part of Deloitte Consulting), and he has served as a director and advisor to many public and private companies as well as private equity firms. Before launching his business, he taught for nearly a decade in Marketing and Service Management at HBS. While there, he developed and delivered the first graduate-level e-commerce course in the nation, enrolling nearly 2,000 MBA students. In building the course, he authored nearly a hundred case studies. Business plans written by students gave rise to dozens of start-ups, including Yahoo! Prior to his taking a leave from HBS, he coined the term and concept of “viral marketing.” He was the School’s only faculty member voted Outstanding Professor for three years in a row by the HBS Students Association.