Microsoft CEO Nadella’s top challenge: Figuring out mobile

Microsoft stands at a crossroads when it comes to mobile. It’s now up to new CEO Satya Nadella to shepherd the company in the right direction.

In taking the reins of the technology titan, Nadella faces a lot of questions about Microsoft. Chief among them will be how the technology titan will navigate the broader shift toward mobile, and just what role its Windows Phone and Windows operating systems play in that world.