NASA’s Jet Propulsion Laboratory (JPL) uses Amazon Simple Workflow Service (SWF) as an integral part of several missions including the Mars Exploration Rover (MER) and Carbon in the Arctic Reservoir Vulnerability Experiment (CARVE). These missions continuously generate large volumes of data that must be processed, analyzed, and stored efficiently and reliably.
Read more – http://aws.amazon.com/swf/testimonials/swfnasa/