Sunil Gupta, a professor at Harvard Business School, argues that many companies are still doing digital strategy wrong. Their leaders think of “going digital” as either a way to cut costs or to attract customers with a flashy new app. Gupta says successful digital strategy is more complicated than that. He recommends emulating the multi-faceted strategies of leading digital companies. Gupta’s the author of Driving Digital Strategy: A Guide to Reimagining Your Business.