In a world of fierce global competition and rapid technological change, traditional strategies for gaining market share and achieving efficiencies no longer yield the returns they once did. How can companies drive consumer preference and secure sustainable growth in this digital, social, and mobile age?

The answer is through functional integration. Some of the world's most highly valued companies--including Amazon, Apple and Google--have harnessed this new business model to build highly interactive ecosystems of interrelated products and digital services, gaining new levels...