4.7. Reflection Checkpoint

Without reviewing these integration patterns now, you risk losing points on exam questions that test when to use Step Functions versus EventBridge, or SQS versus SNS — consider which patterns felt weakest during this phase.

Key Takeaways

Before proceeding, ensure you can:

• Choose between SQS, SNS, EventBridge, and Step Functions for different integration patterns
• Explain when to choose SQS FIFO over SQS Standard
• Describe what Amplify, AppSync, and SageMaker do from a developer perspective
• Identify the key differences between synchronous and asynchronous communication patterns

Connecting Forward

Phase 5 is your final preparation — exam strategy, quick reference tables, and practice questions to validate your readiness.

Self-Check Questions

1. A developer needs to process orders in strict sequence with no duplicates. Which messaging service and configuration should they use?
2. A team wants to build a real-time collaborative app. Would they use API Gateway REST, API Gateway WebSocket, or AppSync? Why?