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AWS Solutions Architect Associate (SAA-C02)

Workflows

Step Functions

  • Used to build serverless workflows to orchestrate Lambda functions
  • Represent flow as a JSON state machine
  • Maximum workflow execution time: 1 year
  • Features: sequence, parallel, conditions, timeouts, error handling, etc.
  • Provides a visual graph showing the current state and which path the workflow has taken

    - attachments/Pasted image 20220513231346.jpg

Simple Workflow Service (SWF)

  • Outdated service (step functions are preferred instead)
  • Code runs on EC2 (not serverless)
  • Ensures that a task is never duplicated (could replace standard SQS queues)
  • 1 year max runtime
  • Built-in human intervention step
  • Step Functions are recommended to be used for new applications, except:
    • If you need external signals to intervene in the processes
    • If you need child processes that return values to parent processes

Last updated: 2022-05-19