Amazon Web Services LLC (AWS), part of US-based online retailer Amazon.com, recently introduced Amazon Simple Workflow Service (Amazon SWF), a workflow service for building scalable, resilient applications. Whether automating business processes for finance or insurance applications, building sophisticated data analytics applications, or managing cloud infrastructure services, Amazon SWF seeks to reliably coordinate all of the processing steps within an application.
Using Amazon SWF, developers can structure the various processing steps in an application as 'tasks' that drive work in distributed applications. Amazon SWF then coordinates these tasks in a reliable and scalable manner. It manages task execution dependencies, scheduling, and concurrency based on a developer's application logic. The service stores tasks, reliably dispatches them to application components, tracks their progress, and keeps their latest state.
NASA Jet Propulsion Lab (JPL) is stated to use Amazon SWF as part of several space and earth science missions including the Mars Exploration Rover. The Amazon product reportedly gives JPL the ability to leverage resources inside and outside of its environment enabling their applications to dynamically scale and run in a truly distributed manner. NASA JPL has integrated Amazon SWF into its Cloud Oriented Architecture and its reference implementation, Polyphony. Amazon SWF is now said to be an integral part of the software engineer's toolbox at JPL.
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