Exam SOA-C03 Topic 3 Question 15 Discussion

Actual exam question for Amazon's SOA-C03 exam
Question #: 15
Topic #: 3

A CloudOps engineer needs to ensure that AWS resources across multiple AWS accounts are tagged consistently. The company uses an organization in AWS Organizations to centrally manage the accounts. The company wants to implement cost allocation tags to accurately track the costs that are allocated to each business unit.
Which solution will meet these requirements with the LEAST operational overhead?

A. Use Organizations tag policies to enforce mandatory tagging on all resources. Enable cost allocation tags in the AWS Billing and Cost Management console. B. Configure AWS CloudTrail events to invoke an AWS Lambda function to detect untagged resources and to automatically assign tags based on predefined rules. C. Use AWS Config to evaluate tagging compliance. Use AWS Budgets to apply tags for cost allocation. D. Use AWS Service Catalog to provision only pre-tagged resources. Use AWS Trusted Advisor to enforce tagging across the organization.

Suggested Answer: A Vote an answer

Tagging is essential for governance, cost management, and automation in CloudOps operations. The AWS Organizations tag policies feature allows centralized definition and enforcement of required tag keys and accepted values across all accounts in an organization. According to the AWS CloudOps study guide under Deployment, Provisioning, and Automation, tag policies enable automatic validation of tags, ensuring consistency with minimal manual overhead.
Once tagging consistency is enforced, enabling cost allocation tags in the AWS Billing and Cost Management console allows accurate cost distribution per business unit. AWS documentation states:
"Use AWS Organizations tag policies to standardize tags across accounts. You can activate cost allocation tags in the Billing console to track and allocate costs." Option B introduces unnecessary complexity with Lambda automation. Option C detects but does not enforce tagging. Option D limits flexibility to Service Catalog resources only. Therefore, Option A provides a centrally managed, automated, and low-overhead solution that meets CloudOps tagging and cost-tracking requirements.
References (AWS CloudOps Documents / Study Guide):
* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Domain 3: Deployment, Provisioning and Automation
* AWS Organizations - Tag Policies
* AWS Billing and Cost Management - Cost Allocation Tags
* AWS Well-Architected Framework - Operational Excellence and Cost Optimization Pillars

by Tab at Dec 13, 2025, 04:02 PM

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