This C|Net article is just a wrapper to The Verge's, but neither mentions the Origins of the Surface
"The goal was, you gotta bring Windows 8 to life," says Microsoft's Panos Panay, general manager of the Surface team. Looking at the vision of Windows 8 and other Microsoft products, Panay was tasked with creating a tablet that would encompass everything Microsoft had to offer.
After the project was commissioned by Windows chief Julie Larson-Green, Panos Panay started to form a team of 12 people to tackle the task of creating a vision for what would become Surface. Panay previously worked on Microsoft's PixelSense table (formerly known as Surface) and slowly grew the Surface team from 12 people to 30 people, then on to 80 people and beyond.
"When we started and kind of all the visions were coming together, it was clear we were gonna go make a tablet," he reveals in an interview with The Verge recently.
The Surface tablet started with the concept that people should be able to do more than competitor tablets.
Apple fanboys would have you believe that it was Steve Jobs who initially came up with the idea of a portable computer/tablet. =D