CLF-C02 Cloud Technology and Services Practice Question
Which AWS service is used to send emails, SMS messages, and push notifications to subscribers in a publish/subscribe pattern?
⚠ Common exam trap
It's easy for candidates to 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.
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.
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 is an email-sending service intended for bulk transactional and marketing messages, delivered via SMTP or the SES API to recipients. It does not deliver SMS or mobile push notifications, and its core model is server-to-recipient email rather than a decoupled publish/subscribe bus where multiple heterogeneous endpoints subscribe to topics. SES can use SNS for bounce/complaint notifications, but that does not make SES itself a pub/sub notification service.
- ✗
Amazon Pinpoint
Why it's wrong here
Amazon Pinpoint is a customer engagement and marketing analytics platform focused on targeted campaigns, audience segmentation, and journey orchestration across email, SMS, push, and in-app messaging. Its purpose is to send personalized communications to defined user segments based on analytics attributes, not to act as a general-purpose publish/subscribe messaging backbone for applications. Pinpoint lacks SNS-style topic fan-out to endpoints like SQS or Lambda for event-driven integration.
- ✓
Amazon SNS
Why this is correct
Amazon SNS is the AWS-native publish/subscribe notification service: publishers send messages to a topic, and SNS immediately fans each message out to every subscriber, which can include email, SMS, mobile push, HTTP/S endpoints, SQS queues, and Lambda functions. It supports delivery policies, message filtering, and dead-letter queues, making it the correct choice for broadcasting application events to multiple consumers without coupling publishers to subscribers. SNS is also an AWS managed service with no infrastructure to provision.
- ✗
Amazon SQS
Why it's wrong here
Amazon SQS is a fully managed message queue service designed for point-to-point decoupling, where a producer sends a message and a single consumer from the competing consumers group polls it for processing. It does not push or broadcast messages to multiple independent subscribers, and it lacks fan-out semantics, so it cannot serve as a pub/sub notification service. While SQS can be subscribed to an SNS topic, that pattern uses SNS as the pub/sub backbone, not SQS itself.
Go deeper
Related to this question
About these practice questions
This CLF-C02 question is part of Courseiva's 988-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.