The correct answer is to configure CloudTrail in each account to deliver logs to a single S3 bucket in the security account. This works because CloudTrail natively supports cross-account log delivery to a centralized S3 bucket, allowing you to aggregate CloudTrail logs from multiple accounts centrally without any additional streaming infrastructure or Lambda functions. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of scalable, low-maintenance logging architectures—the common trap is overcomplicating the solution with Kinesis or cross-account roles when a simple S3 bucket policy with proper permissions suffices. Remember that CloudTrail’s built-in S3 delivery is the most scalable because it handles any number of accounts automatically, and you can query the aggregated logs using Athena or Lake Formation. Memory tip: think “S3 bucket as a single sink” for centralized CloudTrail aggregation.
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 a decentralized IT structure where each business unit manages its own AWS account. The central security team needs visibility into all IAM user activities across accounts. What is the MOST scalable solution to aggregate CloudTrail logs?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure CloudTrail in each account to deliver logs to a single S3 bucket in the security account.
Option D is correct because CloudTrail can be configured in each account to deliver log files to a centralized S3 bucket in the security account. This approach aggregates all IAM user activities into a single location without requiring additional streaming infrastructure, and it scales automatically as new accounts are added. The central security team can then use Amazon Athena or AWS Lake Formation to query the logs across all accounts efficiently.
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.
✗
Enable CloudTrail Insights in each account and review separately.
Why it's wrong here
This does not aggregate logs.
✗
Use AWS Config aggregator to collect IAM user activity.
Why it's wrong here
Config does not capture CloudTrail events.
✗
Set up Amazon Kinesis Data Streams in each account and stream to a central Kinesis Data Firehose.
Why it's wrong here
This is more complex and not necessary for simple log aggregation.
✓
Configure CloudTrail in each account to deliver logs to a single S3 bucket in the security account.
Why this is correct
This centralizes logs without additional tooling.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may overcomplicate the solution by choosing Kinesis (Option C) because they assume streaming is required for scalability, but CloudTrail's native S3 delivery is the most scalable and cost-effective aggregation method for IAM user activity logs.
Detailed technical explanation
How to think about this question
CloudTrail supports cross-account log delivery by allowing you to specify an S3 bucket in a different account, provided the bucket policy grants the necessary permissions (e.g., `AWS:SourceArn` and `AWS:SourceAccount` conditions). This method ensures logs are delivered in near real-time (typically within 15 minutes) and can be further processed using S3 event notifications to trigger AWS Lambda for enrichment or alerting. In large-scale environments, using S3 bucket policies with organizational IDs (e.g., `aws:PrincipalOrgID`) simplifies management by allowing all accounts in an AWS Organization to write to the same bucket without listing individual account ARNs.
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.
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure CloudTrail in each account to deliver logs to a single S3 bucket in the security account. — Option D is correct because CloudTrail can be configured in each account to deliver log files to a centralized S3 bucket in the security account. This approach aggregates all IAM user activities into a single location without requiring additional streaming infrastructure, and it scales automatically as new accounts are added. The central security team can then use Amazon Athena or AWS Lake Formation to query the logs across all accounts efficiently.
What should I do if I get this SAP-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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Question Discussion
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