Here is an excerpt from an article written by Boris Groysberg, L. Kevin Kelly, and Bryan MacDonald for the Harvard Business Review blog. To read the complete article, check out other articles and resources, and/or sign up for a free subscription to Harvard Business Review’s Daily Alerts, please click here.

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We know that different times and different circumstances call for different leadership skills.

So when it comes to managing your own career, how do you prepare yourself to move up? What abilities should young would-be executives focus on developing as they choose companies, functions, and jobs? And what skills should working executives hone as they strive to reach the next level?

Those aren’t easy questions. The trends vary by function, geography, and industry—and, of course, by company. And though we can definitively identify the skills that companies seek now, pinpointing those that will be useful in the future is unavoidably speculative. Nevertheless, in examining hundreds of executive profiles developed over the past decade or so by the executive search firm Heidrick & Struggles and interviewing numerous top managers about the requirements for senior leaders past, present, and future, we have seen some clear signals about how C-level jobs are evolving.

About the Research

One strikingly consistent finding: Once people reach the C-suite, technical and functional expertise matters less than leadership skills and a strong grasp of business fundamentals. Chief information officers need to know how to create business models; chief financial officers, how to develop risk management strategies; chief human resource officers, how to design a succession plan and a talent structure that will provide a competitive edge. In other words, the skills that help you climb to the top won’t suffice once you get there. We’re beginning to see C-level executives who have more in common with their executive peers than they do with the people in the functions they run. And today members of senior management are expected not only to support the CEO on business strategies but also to offer their own insights and contribute to key decisions.

In this article we’ll explore this trend in more detail and explain other findings about skills required in each of seven C-level jobs—CIO, chief marketing and sales officer, CFO, general counsel, chief supply-chain-management officer, chief human resource officer, and CEO. We’ll discuss the competencies that companies have sought over the past decade, those currently in demand, and those that, based on experience and early evidence, we expect to take precedence in the next decade. (For details on the methodology, see the “About the Research” box.) Our aim is to draw a road map of sorts for ambitious managers, to help them plot their next moves.

The Chief Information Officer

In the late 1980s and mid 1990s, most executives in information technology either had grown up in the function, following a standard path from business analyst to director, or were accounting professionals with systems experience. Typically, directorship was the end of the line. IT leaders were detail-oriented, logical, sequential thinkers. But toward the end of that period, as web opportunities burst onto the scene, companies began to seek more strategic ways to apply technology—using the internet to explore new markets, attract new customers, and streamline processes.

The typical IT director back then wasn’t particularly well versed in business strategy or big-picture thinking. Technology departments had become too rigid and parochial to respond quickly to new business challenges and opportunities. IT directors by and large either pushed back with technical reasons for why something couldn’t be done or agreed to requests too quickly without challenging their rationale or grasping their scope (and then frequently failed to deliver). Across geographies and sectors, serious barriers—in both leadership behavior and capability—were emerging between the business and technology functions. The few executives who could straddle both worlds were in high demand.

In the mid to late 1990s, in response to the lack of business savvy among the IT staff, a new position evolved—CIO. The CIO was a senior executive who understood not only new technologies but also how they applied to business strategy. These new members of the executive team were able to broker the complex relationship between business leaders and the IT department. They were less exclusively concerned with the technology itself and more attuned to how it could generate competitive advantage—and more focused on leadership and organizational effectiveness. Meanwhile, another phenomenon was emerging: globalization. IT managers had to deal with integrating and standardizing processes and platforms across multiple operating companies, group functions, and regions.

Then, in 2008, as credit began to dry up, business needs shifted again. Though IT had become better aligned with the business (at least when it came to improved relationships), IT executives now had to make complex decisions based on rigorous analyses of return on investment. Their jobs became less about managing projects well and more about managing the right projects well. Major technology expenditures needed to be justified. A number of CIOs found themselves in over their heads; the IT function required a leader who understood the increased complexity of business and how IT strategy, business strategy, risk management, and finance interacted.

For the foreseeable future, we expect the demand for a sophisticated mix of skills in CIOs will increase. Companies will seek “hybrid” CIOs who have not only business savvy but also experience with analytics, organizational design, and infrastructure— and who know how to wire together a holistic system that can support global growth. In many cases, a commercial background will be a plus. Sales and marketing knowledge will be considered an advantage when it comes to e-commerce initiatives, as will stints in supply-chain management and logistics.

The most sought-after CIOs will have a keen understanding of how companies can put to use the oceans of information they now collect. As the CIO of a global consumer goods company explains, “There is a data explosion happening around us, but we feel we are well equipped to exploit this opportunity and use it as a competitive distinguisher in our markets. The ways we share our ideas and gain customer feedback are very new and exciting.”

To check out New Requirements for the CIO, please click here.

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To read the complete article, please click here.

Boris Groysberg is an associate professor of business administration at Harvard Business School and the author of Chasing Stars: The Myth of Talent and the Portability of Performance (Princeton University Press, 2010). L. Kevin Kelly (kkelly@heidrick.com) is the chief executive officer of Heidrick & Struggles. Bryan MacDonald (bmacdonald@heidrick.com) is a partner at Heidrick & Struggles.