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Question 383 of 1,024
Cloud Technology and Services →easyMultiple ChoiceObjective-mapped

Amazon SNS: Pub/Sub Messaging for Email, SMS, Push

This CLF-C02 practice question tests your understanding of cloud technology and services. 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.

Which AWS service is used to send emails, SMS messages, and push notifications to subscribers in a publish/subscribe pattern?

Quick Answer

The answer is Amazon SNS, the AWS service designed for sending email, SMS, and push notifications in a publish/subscribe pattern. This is correct because Amazon Simple Notification Service (SNS) acts as a fully managed pub/sub messaging bus, where a single topic can fan out messages to multiple subscriber endpoints—such as email addresses, phone numbers for SMS, or mobile app push targets—without the sender needing to manage each delivery channel individually. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of how SNS decouples message producers from consumers, often appearing alongside a distractor like Amazon SQS (which is for queue-based polling, not push delivery). A common trap is confusing SNS with SES (Simple Email Service), but remember: SNS is for pub/sub notifications across multiple protocols, while SES is solely for transactional email. For a quick memory tip, think of SNS as the "shout it out" service—it pushes messages to all subscribers at once, just like a news alert system.

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 SNS

Amazon Simple Notification Service (SNS) is a fully managed pub/sub messaging service that enables you to send messages to a large number of subscribers via multiple protocols, including email (JSON/plain text), SMS (text messages), and push notifications to mobile devices. It decouples message producers from consumers by using topics, where each topic can have multiple subscriber endpoints that receive messages asynchronously.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

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 SES

    Why it's wrong here

    Amazon SES (Simple Email Service) is for sending bulk and transactional email only, not SMS or push notifications.

  • ✗

    Amazon Pinpoint

    Why it's wrong here

    Pinpoint is for targeted marketing communications and customer engagement analytics, not the core pub/sub messaging pattern.

  • ✓

    Amazon SNS

    Why this is correct

    SNS enables publish/subscribe messaging with delivery to email, SMS, push notifications, HTTP endpoints, SQS, and Lambda.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Amazon SQS

    Why it's wrong here

    SQS is a message queue for point-to-point communication, not a pub/sub notification service.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse Amazon Pinpoint's ability to send SMS and push notifications with the pub/sub pattern, but Pinpoint is a campaign and analytics tool, not a general-purpose pub/sub messaging service like SNS.

Detailed technical explanation

How to think about this question

Under the hood, SNS uses a fan-out architecture where a single message published to a topic is replicated and pushed to all subscribed endpoints in parallel, with delivery policies for retries and dead-letter queues. It supports delivery status logging via CloudWatch and message filtering by attributes, allowing subscribers to receive only relevant messages. In a real-world scenario, an e-commerce platform might use SNS to notify an SQS queue for order processing, an email list for receipts, and an SMS endpoint for urgent shipping updates—all from a single publish call.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

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

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this CLF-C02 question test?

Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Amazon SNS — Amazon Simple Notification Service (SNS) is a fully managed pub/sub messaging service that enables you to send messages to a large number of subscribers via multiple protocols, including email (JSON/plain text), SMS (text messages), and push notifications to mobile devices. It decouples message producers from consumers by using topics, where each topic can have multiple subscriber endpoints that receive messages asynchronously.

What should I do if I get this CLF-C02 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 11, 2026

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This CLF-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 CLF-C02 exam.