Microsoft: What went right under Satya Nadella? bbc.com

On Monday, it will be five years since Satya Nadella was announced as Microsoft's chief executive.
Since taking charge he has turned the tech firm's fortunes around, making it the most valuable company in the world for the first time since 2002. Go on, admit it. You thought Microsoft was so last century, didn't you? In the late 80s and 90s, the company's Windows operating system ruled the world.