I don't have a computer science background and only have a rudimentary knowledge of what CS is all about. However, I wonder, what are the most significant CS advances of the last five years?

To give you an idea of how clueless I am, I couldn't name one of these advances. But, please don't spare me all the gory details.

I'm not looking for an education in CS or a story about the history of CS. As far as this question is concerned only the past five years matter! :-)