Step Functions

Introduction

• Build a serverless visual workflow to orchestrate your Lambda functions / EC2 / ECS, on-premise servers, API Gateway.

• Represent flow as a JSON state machine.

Feature

• Tasks:

  • Lambda tasks

  • Activity tasks

    • Activity worker (HTTP), EC2 instances, mobile device, on-premise DC, they poll the Step Function servcie.

  • Service tasks

    • Connect to a supported AWS service

    • ECS task, Fargate, DynamoDB, Batch job, SNS topic, SQS.

  • Wait tasks

    • To wait for a duration or until a timestamp

• Can be triggered by:

  • API Gateway

  • CloudWatch events

  • SDK / CLI

• Includes: sequence, parallel, conditions, timeouts, error handling, human approval, etc.

• Maximum execution time: 1 year

• Be mindful to chain Lambda Functions about added latency.