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CLF-C02 · Study Guide

← Chapter 6: Integration & Operations

6.1

Messaging (SQS / SNS / EventBridge)

Decouple with queues, fan out with pub/sub, route events with an event bus.

Key points

  • SQS → queue; SNS → pub/sub notifications; EventBridge → events.

Amazon SQS

SQS stands for Simple Queue Service. It is a managed message queue.

Application A
     ↓
    SQS
     ↓
Application B

SQS is commonly used to decouple application components.

Amazon SNS

SNS stands for Simple Notification Service. It supports publish/subscribe messaging.

Publisher
    ↓
   SNS
  ↙   ↘
Email  Application

Amazon EventBridge

EventBridge is an event bus service used for event-driven architectures.

Easy trick

  • SQS → Queue
  • SNS → Notifications / Pub-Sub
  • EventBridge → Events

Exam focus

Decouple components → SQS; notify many subscribers → SNS.