Amazon Web Service

Simple Work Flow (SWF)

To coordinate work across distributed components in an application is provided by Amazon Simple Workflow Service. Components of your application performs a task. Task represents a logical unit of work. The coordination of task across application is a combination of scheduling, intertask dependencies and concurrency management with respect to the logical flow of the application. Complexities like tracking progress and managing a state of the task are done by SWF and give you full control over implementing and coordinating task.


For performing task workers can be implemented by you using SWF. These workers have an option to either work on cloud infrastructure such as Amazon EC2 or in their own premises. Long-running tasks can be created. Also, tasks which may fail, requires restart etc can be created with varying throughput and latency. Tasks are stored at SWF and workers gets a task assigned when they are ready, you can track the progress of the task and maintain a state including details on task completion. For coordination of task, a program can be written such that it gets the latest state of each task from SWF and used to initiate its subsequent tasks.


An application execution state is maintained for a long time such that any failure can be recovered quickly in individual components. The application component can independently can be implemented, deployed, scaled and modified using SWF.


Variety of applications is supported by SWF. SWF suites range of use cases that require task coordination which includes processing of media, back-ends of a web application, workflows of business process and analytics pipelines.


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