Clay Christensen's landmark theory of disruptive innovation has proved to be a powerful way of thinking about innovation-driven growth. “Disruption” describes a process whereby a smaller company with fewer resources is able to successfully challenge established incumbent businesses. Specifically, as incumbents focus on improving their products and services for their most demanding (and usually most profitable) customers, they exceed the needs of some segments and ignore the needs of others. Entrants that prove disruptive begin by successfully targeting those overlooked segments, gaining a foothold by delivering more-suitable functionality — frequently at a lower price. Incumbents, chasing higher profitability in more-demanding segments, tend not to respond vigorously. Entrants then move upmarket, delivering the performance that incumbents’ mainstream customers require, while preserving the advantages that drove their early success. When mainstream customers start adopting the entrants’ offerings in volume, disruption has occurred. --------------------------------------------------------------------- At Harvard Business Review, we believe in management. If the world’s organizations and institutions were run more effectively, if our leaders made better decisions, if people worked more productively, we believe that all of us — employees, bosses, customers, our families, and the people our businesses affect — would be better off. So we try to arm our readers with ideas that help them become smarter, more creative, and more courageous in their work. We enlist the foremost experts in a wide range of topics, including career planning, strategy, leadership, work-life balance, negotiations, innovation, and managing teams. Harvard Business Review empowers professionals around the world to lead themselves and their organizations more effectively and to make a positive impact. Sign up for Newsletters: https://hbr.org/email-newsletters Follow us: https://hbr.org/ https://www.linkedin.com/company/harvard-business-review https://www.facebook.com/HBR/ https://twitter.com/HarvardBiz https://www.instagram.com/harvard_business_review