Intro

• Serverless workflow orchestration
• Model workflows as state machines (1 state machine per workflow)
• Written in JSON
• Visual workflow execution
• Execution event history shows the input and output of each step
• Step function has amazing error handling capabilities (can be offloaded from the application)

Task

• Each task in the workflow could perform an action on an AWS service or launch another step function workflow.

• Task definition to invoke a Lambda function

  

States

• Choice State - Test for a condition to send to a branch (or default branch)
• Fail or Succeed State - Stop execution with failure or success
• Pass State - Simply pass its input to its output or inject some fixed data
• Wait State - Provide a delay for a certain amount of time or until a specified time or date
• Map State - Dynamically iterate steps