Centralize CloudTrail Logs Across AWS Organizations
A company is using AWS Organizations with multiple accounts. The security team needs to centrally monitor all root user API activity across all accounts and receive alerts within minutes. What is the MOST efficient solution?
Quick Answer
The answer is to create an organization trail in CloudTrail that logs all accounts, then use CloudWatch Logs metric filters and alarms to detect root login events. This is the most efficient solution because an organization trail centralizes CloudTrail across AWS Organizations, automatically logging API activity for every member account from a single management point, which eliminates the operational overhead of managing separate per-account trails. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding of how organization trails simplify centralized monitoring and how CloudWatch metric filters can parse log events for specific patterns like root user activity, with alarms triggering SNS notifications within minutes. A common trap is choosing to deploy individual trails per account or relying solely on AWS Config rules, which lack the real-time alerting capability. Memory tip: think "Org Trail + Metric Filter = Centralized Root Watch."
⚠ Common exam trap
The trap here is that candidates may overcomplicate the solution by choosing per-account setups (B, C, D) instead of leveraging the native AWS Organizations integration with CloudTrail, which provides a single, centralized trail for all accounts.
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
✓
Create an organization trail in CloudTrail that logs all accounts. Use CloudWatch Logs metric filters and alarms to detect root login events.
An organization trail in AWS CloudTrail logs API activity for all accounts in AWS Organizations from a single point, eliminating the need to manage per-account trails. By sending these logs to CloudWatch Logs, you can create metric filters to detect root user login events (e.g., the 'RootLogin' event) and configure CloudWatch Alarms to trigger SNS notifications within minutes, meeting the requirement for centralized monitoring and rapid alerts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create an organization trail in CloudTrail that logs all accounts. Use CloudWatch Logs metric filters and alarms to detect root login events.
Why this is correct
An organization trail logs all accounts centrally. CloudWatch Logs metric filters can detect root activity and trigger alarms in near real-time.
- ✗
Enable CloudTrail in each account and aggregate logs to a centralized S3 bucket. Use Athena queries to detect root activity and send alerts via SNS.
Why it's wrong here
Athena queries are not real-time; they run on a schedule, causing delays.
- ✗
Use AWS Lambda functions in each account to poll CloudTrail logs and send root activity to a central SQS queue.
Why it's wrong here
Polling adds complexity and latency; Lambda functions would need frequent invocations and are less efficient than CloudWatch alarms.
- ✗
Enable AWS Config rules in each account to detect root user activity and send notifications to a central SNS topic.
Why it's wrong here
AWS Config rules are for resource configuration compliance, not for monitoring API activity in real-time.
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Same concept, more angles
2 more ways this is tested on SCS-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company uses AWS Organizations with multiple accounts. The security team wants to ensure that all CloudTrail trails are enabled in all accounts and log to a central S3 bucket. What is the MOST efficient way to enforce this?
hard- A.Use AWS Lambda to check each account and enable CloudTrail if missing.
- B.Use AWS Config aggregator to verify compliance and send alerts.
- C.Create a service control policy (SCP) that requires CloudTrail.
- ✓ D.Use AWS CloudFormation StackSets to deploy a CloudTrail template to all accounts.
Why D: AWS CloudFormation StackSets allows you to deploy a CloudTrail template across multiple accounts and Regions from a single management account, ensuring all accounts have a trail configured to log to the central S3 bucket. This approach is the most efficient as it automates deployment, enforces consistent configuration, and scales across the entire organization without requiring per-account manual intervention or custom scripting.
Variation 2. A company uses AWS Organizations with multiple accounts. They want to centralize logging of all API calls across all accounts and store them in a single S3 bucket. Which configuration should be used?
hard- A.Use AWS Config to record API calls across all accounts
- B.Create a separate CloudTrail trail in each account and aggregate logs using Amazon Athena
- ✓ C.Create an organization trail in the management account
- D.Enable VPC Flow Logs in each account and send to a central S3 bucket
Why C: AWS Organizations allows you to create an organization trail in the management account that automatically logs API calls for all member accounts. This centralizes CloudTrail logs into a single S3 bucket without needing to configure individual trails per account, ensuring complete coverage and simplified management.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.