Sheryl Sandberg, COO Facebook

As the COO at the helm of Facebook, Sheryl Sandberg juggles the tasks of monetizing the world’s largest social networking site while keeping its users happy and engaged. Today she manages Facebook’s sales, marketing, business development, human resources, public policy and communications.  Sandberg’s experience navigating the complex and socially sensitive world of international economics has proven useful as she and Facebook founder Mark Zuckerberg work to strike a balance between helping Facebook users control privacy while finding ways to monetize its most valuable asset: data.
 
Zuckerberg says he’s grateful that Sandberg “handles things I don’t want to,” such as advertising strategy, hiring and firing, management, and dealing with political issues. “All that stuff that in other companies I might have to do. And she’s much better at that.”