Quick Answer
The answer is Amazon Simple Queue Service (SQS). SQS is the correct choice because it provides a fully managed, durable message queue that enables asynchronous communication between microservices, allowing them to decouple and process messages independently without waiting for each other. This directly addresses the need for decoupling microservices with asynchronous durable messaging, as SQS stores messages redundantly across multiple Availability Zones and retains them until a consumer processes and deletes them. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your ability to distinguish between messaging and streaming services—a common trap is confusing SQS with Amazon SNS (a pub/sub push model) or Kinesis (real-time streaming), but remember that SQS is the only queue-based service for point-to-point asynchronous decoupling. A useful memory tip: SQS stands for "Simple Queue Service," and a queue holds messages until they are pulled, unlike a topic that pushes them out.
This SAP-C02 practice question tests your understanding of design for new solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating a monolithic application to a microservices architecture on AWS. They want to decouple the services and ensure that messages between services are processed asynchronously and durably. Which AWS service should they use for this purpose?
Amazon Kinesis Data Streams
Why wrong: Kinesis is for real-time streaming, not simple message queuing.
Amazon Simple Queue Service (SQS)
SQS is a fully managed message queue for decoupling and asynchronous processing.
Amazon Simple Notification Service (SNS)
Why wrong: SNS is for pub/sub, not point-to-point queueing.
AWS Step Functions
Why wrong: Step Functions orchestrate workflows, not a durable message queue.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon Simple Queue Service (SQS)
Option A is correct because Amazon SQS provides a fully managed message queue for asynchronous communication between microservices. Option B is incorrect because Amazon SNS is a pub/sub service, not a queue. Option C is incorrect because Amazon Kinesis is for real-time streaming. Option D is incorrect because AWS Step Functions is for orchestrating workflows.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon Kinesis Data Streams
Why it's wrong here
Kinesis is for real-time streaming, not simple message queuing.
Amazon Simple Queue Service (SQS)
Why this is correct
SQS is a fully managed message queue for decoupling and asynchronous processing.
Related concept
Read the scenario before looking for a memorised answer.
Amazon Simple Notification Service (SNS)
Why it's wrong here
SNS is for pub/sub, not point-to-point queueing.
AWS Step Functions
Why it's wrong here
Step Functions orchestrate workflows, not a durable message queue.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Design for New Solutions — study guide chapter
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FAQ
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon Simple Queue Service (SQS) — Option A is correct because Amazon SQS provides a fully managed message queue for asynchronous communication between microservices. Option B is incorrect because Amazon SNS is a pub/sub service, not a queue. Option C is incorrect because Amazon Kinesis is for real-time streaming. Option D is incorrect because AWS Step Functions is for orchestrating workflows.
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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.
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