AWS Step Functions
AWS Step Functions is a serverless orchestration service that lets you integrate multiple AWS services into flexible workflows. It allows you to coordinate distributed applications and microservices using visual workflows.
Key Features
- Visual Workflows: Design and visualize your application's logic as a state machine.
- State Management: Automatically manages the state of each step and handles retries/failures.
- Serverless Orchestration: Coordinates Lambda functions, ECS tasks, and more.
- Long-running workflows: Can handle workflows that run for up to a year (Standard Workflows).
Exam Tips
- "Orchestrate Workflows": Answer is Step Functions.
- "Visual Interface": Answer is Step Functions.
- "Coordinate Microservices": Answer is Step Functions.
- "State Machine": The core concept of Step Functions.
Common Use Cases
- Microservices Orchestration: Managing sequences of service calls.
- Data Processing: ETL pipelines invoking Glue or EMR.
- Business Process Automation: Handling approvals and long-running processes.