Dude, that sounds awesome. As far as I'm concerned, published papers are innovation, that is where the action takes place. Products themselves are always just an implementation of ideas that have been put out in the research for years previously - not to denigrate the huge work that goes into commercialising products, not at all. People just do not understand research, and if you are not in close contact with a lot of published research, I can see how it would be easy to think technology was just the products on the shelves.
I hope you the very best in your time at Microsoft, I would love to be in your shoes. I'm doing an honours research project for a computational neuroscience lab at the moment, and all I can say is these experiences are important, and fantastic! Good luck.