[AWS] Simple Workflow (SWF)

SWF is a web service that coordinates and manages the execution of activities across distributed application components. Tasks can be run asynchronously.

  • Activity is a single step within a workflow.
  • Task is a processing step, which interacts with workers – Activity Task and Decision task
  • Worker receives a task and take action on it.
  • SWF guarantees the order of execution – consistent execution.


  • SQS has a 14-day retention period. In SWF, workflow executions can last up to 1 year.
  • SQS is message-oriented, and SWF is task-oriented.
  • SWF keeps track of all tasks and events.
  • SWF can be used when human actions are required.

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