Competing on Internet time means competitive advantage can be won and lost overnight. In this penetrating analysis of strategy-making and product innovation in the dynamic markets of commercial cyberspace, Michael Cusumano and David Yoffie draw vital lessons from Netscape, the first pure Internet company, and how it has employed the techniques of "judo strategy" in its pitched battle with Microsoft, the world's largest software producer. Managers in every high-tech industry will discover a wealth of new ideas on how to create and scale-up a new company quickly; how to compete in fast-paced, unpredictable industries; and how to design products for rapidly evolving markets. The lessons that Cusumano and Yoffie derive from Netscape's contest with Microsoft go far beyond start-ups and Internet software. Small companies in any industry and powerful, established firms alike will welcome the principles the authors formulate from this David-and-Goliath-like struggle.