Quick Answer
The answer is Amazon Simple Notification Service (SNS) because it is the AWS service designed to capture Auto Scaling lifecycle events and deliver notifications to subscribers. When an Auto Scaling group launches a new instance, it emits lifecycle events such as `EC2 Instance-launch Lifecycle Action` into Amazon EventBridge. An EventBridge rule can then match these events and route them to an SNS topic, which pushes the notification out via email, SMS, or HTTP endpoints. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of how EventBridge acts as the intermediary between Auto Scaling and SNS—a common trap is choosing CloudWatch Alarms or Lambda directly, but SNS is the notification delivery service, not the event capture service. Remember that EventBridge catches the event, SNS sends the alert. Memory tip: think “EventBridge catches, SNS notifies.”
This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. 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 SysOps administrator wants to be notified when an Auto Scaling group launches a new instance. Which AWS service can be used to capture the Auto Scaling lifecycle events and send a notification?
AWS Config
Why wrong: Config records resource changes, but does not send notifications for launch events.
Amazon CloudWatch Logs
Why wrong: CloudWatch Logs is for log storage.
Amazon Simple Notification Service (SNS)
Auto Scaling can publish notifications to SNS for scale-out events.
AWS CloudTrail
Why wrong: CloudTrail logs API calls, but does not send real-time notifications.
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 Notification Service (SNS)
Amazon SNS is the correct choice because it can receive lifecycle notifications from Auto Scaling groups via Amazon EventBridge (formerly CloudWatch Events) and then deliver those notifications to subscribers (e.g., email, SMS, HTTP endpoints). Auto Scaling groups emit lifecycle events (e.g., `EC2 Instance-launch Lifecycle Action`) that can be captured by EventBridge rules, which then invoke an SNS topic to send the notification.
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.
AWS Config
Why it's wrong here
Config records resource changes, but does not send notifications for launch events.
Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs is for log storage.
Amazon Simple Notification Service (SNS)
Why this is correct
Auto Scaling can publish notifications to SNS for scale-out events.
Related concept
Read the scenario before looking for a memorised answer.
AWS CloudTrail
Why it's wrong here
CloudTrail logs API calls, but does not send real-time notifications.
Common exam traps
The trap here is that candidates often confuse AWS CloudTrail (which records API calls) with EventBridge (which captures service events), leading them to choose CloudTrail for event-driven notifications, but CloudTrail does not handle lifecycle events or push notifications directly.
Detailed technical explanation
Under the hood, Auto Scaling lifecycle hooks allow instances to be paused during launch or termination, and these hooks emit events to EventBridge. EventBridge rules can match specific event patterns (e.g., `source: aws.autoscaling`, `detail-type: EC2 Instance-launch Lifecycle Action`) and route them to an SNS topic. This architecture decouples event detection from notification delivery, enabling scalable, near-real-time alerts without polling.
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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Monitoring, Logging, and Remediation — This question tests Monitoring, Logging, and Remediation — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon Simple Notification Service (SNS) — Amazon SNS is the correct choice because it can receive lifecycle notifications from Auto Scaling groups via Amazon EventBridge (formerly CloudWatch Events) and then deliver those notifications to subscribers (e.g., email, SMS, HTTP endpoints). Auto Scaling groups emit lifecycle events (e.g., `EC2 Instance-launch Lifecycle Action`) that can be captured by EventBridge rules, which then invoke an SNS topic to send the notification.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This SOA-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 SOA-C02 exam.
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