Economies around the world are slowing down, and companies are looking for ways to trim spending and improve the bottom line. Although information technology often represents a small fraction of the corporate cost base, senior executives inevitably turn their attention to IT budgets for substantial contributions. Yet in some instances, IT investments deliver more value to a company’s top and bottom lines—by creating new efficiencies and increasing revenues—than any savings gained from traditional IT cost cutting.

IT has come a long way over the past decade. Budgets grew rapidly during the dot-com boom and the run-up to Y2K, then declined drastically when the bubble burst. Over the following years, CIOs, working with business unit leaders, improved the performance of IT departments by streamlining application portfolios, reducing infrastructure costs, improving governance, consolidating vendors, and outsourcing many activities.

Much has changed across the business landscape as well. Technology now meshes tightly with operations in ways that weren’t possible a decade ago; the apparel maker Li & Fung, for instance, uses IT to manage supply chains with a network of over 7,500 different suppliers. At the same time, e-business, once a buzzword, now forms a part of the corporate status quo. IT capabilities...