17. Ginni Rometty
Chairman, CEO, IBM
Rometty is quietly remaking IBM into a cloud computing power. She acquired Infrastructure-as-a-Service high-flyer Softlayer Technologies this summer for $2 billion and formed a cloud services division that combines Softlayer with IBM SmartCloud.
If that isn't enough, IBM opened a new Federal Cloud Innovation Center in Washington, D.C., to help the federal government build mission ready clouds.
With smartphones and social computing changing the IT landscape, Rometty has also stepped up IBM's mobile messaging march with the acquisition of mobile messaging company Xtify and a push to bring the IBM Watson supercomputing technology to smartphones.