What just happened? Did it finally happen? Nokia has just been bought by Microsoft. At least the part of Nokia that directly impacts the hardware in your hand. For 7.2 billion dollars, Microsoft has just bought Nokia’s Devices and Services unit, the part that makes your beautiful Lumia running Windows Phone. It will also license Nokia’s patents and use their mapping services. Why? Here’s why according to Microsoft’s CEO Steve Ballmer and Nokia’s Stephen Elop.