Chango is an online advertising company that pioneered a technique called Search Retargeting. Our systems look at about 10 billion records / day which means we need a fast and effective way of analyzing our data. In our search for a better Map/Reduce framework we found Disco, an Erlang/Python based Map/Reduce framework that's small, fast, elegant, understandable. We needed a way to tame the power of Disco and that's when we came up with the Inferno project which takes even more complexity out of Map/Reduce. With Inferno you concentrate about what you want from your data by letting it take care of all the underlying Map/Reduce complexity.