SAP-C02 Design for New Solutions Practice Question
A company is designing a new microservices-based application on AWS. They need to decouple services and ensure asynchronous communication. Which AWS service should they use?
⚠ Common exam trap
Candidates often confuse Amazon SNS (pub/sub) with SQS (queue), thinking both provide decoupling, but SNS requires subscribers to be active or integrated with a queue, whereas SQS inherently buffers messages for asynchronous consumption.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon SQS
Amazon SQS (Simple Queue Service) is the correct choice because it provides a fully managed message queue that enables asynchronous communication between microservices. By decoupling the components, SQS allows one service to send messages to a queue, and another service to poll and process those messages independently, ensuring fault tolerance and scalability without requiring both services to be available simultaneously.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon Kinesis
Why it's wrong here
Kinesis is for real-time data streaming, not message queuing.
- ✓
Amazon SQS
Why this is correct
SQS provides a message queue that decouples services.
- ✗
AWS Lambda
Why it's wrong here
Lambda is a compute service, not a messaging service.
- ✗
Amazon SNS
Why it's wrong here
SNS is a pub/sub service, not a queue for decoupling.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.