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Meet Uber's newly chosen CEO
Dara Khosrowshahi in 2012 at the Allen & Company Sun Valley Conference (AP's Paul Sakuma)

On Sunday night, Uber's board of directors finally chose its next CEO: Dara Khosrowshahi, Expedia's chief executive. The Uber CEO job has been vacant since late Junem when co-founder Travis Kalanick stepped down after being pressured by a group of investors.

Why it matters: At $70 billion, Uber is the most valuable private company in the world. It's also a global business that's facing a multitude of challenges, including ongoing losses, an ugly trade secret theft lawsuit, an aggressive culture that has created an environment of sexual harassment and discrimination, and a strained relationship with drivers, among other things. Hopefully, Khosrowshahi's combination of dealmaking and management skills will help him navigate the above, along with managing a rambunctious board of directors (with one member currently suing another), and of course, working with Kalanick.