20. Ginni Rometty
Chairman, President, CEO
Ginni Rometty knows what needs to be done to make IBM a leader in the cloud, big data and analytics. And she's getting it done. Case in point is Armonk, N.Y.-based IBM's SoftLayer acquisition, which is paying off in big cloud computing gains with 86 percent year-over-year growth in the second quarter. Other big bets: the Apple partnership, the acquisition of Cloudant and an ambitious bid to commercialize IBM's famed Watson cognitive computing platform.