Simple Workflow Service


  • task-oriented API, not like SQS which is a message-oriented API
  • SWF ensures that tasks are assigned only once (not possible twices like SQS)
  • SWF keps track of all events in an app (not like SQS, you need to implement your own app-level tracking)
  • makes easy coordinations work between different componentes
  • steps like: media processing, web app backends, business process workflows, analytics pipelines
  • example: amazon shopping from order, cc check, ship order, completion and end
  • needs workers and deciders (EC2 instances)