Satya Nadella has officially been named as Microsoft's third CEO, following the short line of Bill Gates and, until today, Steve Ballmer. Those are some enormous shoes to fill, both figuratively and literally. He inherits an enormous task as well — to steer one of the world's largest and most important companies into the future. That Microsoft chose Nadella, a cloud and enterprise veteran, gives us our first hint at their course. But just a hint.