Cloud MapReduce was initially developed at Accenture Technology Labs. It is a MapReduce implementation on top of the Amazon Cloud OS.

By exploiting a cloud OS's scalability, Cloud MapReduce achieves three primary advantages over other MapReduce implementations built on a traditional OS:

* It is faster than other implementations (e.g., 60 times faster than Hadoop in one case. Speedup depends on the application and data.).

* It is more scalable and more failure resistant because it has no single point of bottleneck.

* It is dramatically simpler with only 3,000 lines of code (e.g., two orders of magnitude simpler than Hadoop).