Have you ever heared hadoop? You are totally out if you answered ‘no’.  Apache Hadoop is an very popluar open source map-reduce system. Yahoo! applied and made great contribute to hadoop.

Map-reduce as a programming model was invented by google. If your company has great amount of data and very complex compution to deal with, and you will not spend too much money on expensive machines or expensive business solutions, you may conside hadhoop!