The answer is Amazon CloudWatch Events, now part of Amazon EventBridge. This is the correct choice because EventBridge can directly consume CloudTrail log events in real time, using event pattern matching to filter for specific API calls like DeleteTrail and route them to targets such as an SNS topic or Lambda function for immediate notification. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding of real-time CloudTrail alerting using EventBridge, often appearing as a distractor where candidates mistakenly choose CloudWatch Logs or CloudTrail itself—remember that CloudTrail delivers logs, but EventBridge triggers the alert. A common trap is confusing CloudWatch Logs metric filters with EventBridge rules; the key difference is that EventBridge provides sub-minute latency for event-driven alerts, while CloudWatch Logs works on a log delivery delay. Memory tip: think “EventBridge bridges events to actions”—if you need instant reaction to an API call, EventBridge is your bridge.
SCS-C02 Threat Detection and Incident Response Practice Question
This SCS-C02 practice question tests your understanding of threat detection and incident response. 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 has enabled AWS CloudTrail and wants to receive real-time notifications when specific API calls, such as DeleteTrail, are made. Which service should be used to trigger an alert based on CloudTrail log events?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon CloudWatch Events / Amazon EventBridge
Amazon CloudWatch Events (now part of Amazon EventBridge) is the correct service to trigger real-time alerts based on CloudTrail log events. You can create a rule that matches specific API calls, such as DeleteTrail, and route the event to a target like an SNS topic or Lambda function for immediate notification. CloudTrail delivers log events to CloudWatch Logs, and EventBridge can directly consume those events for pattern matching and alerting.
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.
✗
AWS CloudTrail console notifications
Why it's wrong here
CloudTrail does not provide real-time notifications; it delivers logs to S3.
✓
Amazon CloudWatch Events / Amazon EventBridge
Why this is correct
EventBridge can match CloudTrail events and trigger actions like SNS notifications.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon VPC Flow Logs
Why it's wrong here
VPC Flow Logs capture IP traffic, not API calls.
✗
Amazon S3 event notifications
Why it's wrong here
S3 events can notify on object creation, but not on specific API calls.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse S3 event notifications (which work on S3 objects) with CloudTrail log delivery to S3, mistakenly thinking S3 notifications can parse CloudTrail logs for specific API calls, but S3 notifications only react to bucket-level object events, not the content of log files.
Detailed technical explanation
How to think about this question
Under the hood, CloudTrail delivers management events to CloudTrail’s own event history and optionally to CloudWatch Logs. EventBridge uses a default event bus that can ingest CloudTrail events via a rule with an event pattern like {"source":["aws.cloudtrail"],"detail-type":["AWS API Call via CloudTrail"],"detail":{"eventName":["DeleteTrail"]}}. This pattern matching happens in near real-time, typically within 5 minutes of the API call. A subtle behavior is that EventBridge can also capture data events (e.g., S3 object-level operations) if CloudTrail is configured to log them, but management events like DeleteTrail are always logged by default.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
Threat Detection and Incident Response — This question tests Threat Detection and Incident Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon CloudWatch Events / Amazon EventBridge — Amazon CloudWatch Events (now part of Amazon EventBridge) is the correct service to trigger real-time alerts based on CloudTrail log events. You can create a rule that matches specific API calls, such as DeleteTrail, and route the event to a target like an SNS topic or Lambda function for immediate notification. CloudTrail delivers log events to CloudWatch Logs, and EventBridge can directly consume those events for pattern matching and alerting.
What should I do if I get this SCS-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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This SCS-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 SCS-C02 exam.
Question Discussion
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