2Application Integration and Event-Driven Design

• 2.1Loose Coupling with SQS and SNS

  Understand loose coupling: SQS (point-to-point, pull) vs. SNS (pub/sub, push), visibility timeout, dead-letter queues, and fan-out.

• 2.2Event-Driven Architecture with EventBridge

  Understand event-driven design with Amazon EventBridge: event buses and rules (pattern matching), scheduling, and routing to targets.

• 2.3Orchestrating Workflows with Step Functions

  Understand workflow design with AWS Step Functions state machines: orchestrating multiple steps (sequence, choice, parallel), retries/error handling, and integrating Lambda and other services.