The correct action is to apply tags to resources and enable cost allocation tags in Billing and Cost Management. This works because cost allocation tags allow you to categorize and filter AWS costs by business unit—using a custom tag key like “BusinessUnit”—directly within Cost Explorer and cost reports, without needing any third-party tools or manual overhead. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of native cost governance within AWS Organizations, often appearing as a distractor against more complex solutions like creating separate consolidated billing accounts or using third-party analytics. A common trap is over-engineering: candidates might suggest building a custom pipeline when AWS already provides tag-based filtering across accounts. Remember the memory tip: “Tag it, then flag it”—apply the tag to resources, then enable the tag in Billing to generate cost reports by business unit without additional overhead.
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. 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 is using AWS Organizations with consolidated billing. The finance team wants to track costs by business unit. Each business unit has its own AWS account. The team needs a solution that allows them to generate cost reports filtered by business unit without additional overhead. Which action should be taken?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Apply tags to resources and enable cost allocation tags in Billing and Cost Management.
Option C is correct because applying tags to resources and enabling cost allocation tags in AWS Billing and Cost Management allows the finance team to categorize costs by business unit without additional overhead. Each business unit's AWS account can have resources tagged with a key like 'BusinessUnit', and once cost allocation tags are activated, Cost Explorer and cost reports can filter and group by these tags, providing automated cost tracking across accounts in AWS Organizations.
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.
✗
Use Cost Explorer to filter by linked account, which automatically groups by business unit.
Why it's wrong here
Accounts may not map directly to business units.
✗
Use AWS Budgets to create budgets per account and manually aggregate.
Why it's wrong here
Manual overhead.
✓
Apply tags to resources and enable cost allocation tags in Billing and Cost Management.
Why this is correct
Correct: Tagging enables filtering by business unit.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a separate payer account for each business unit.
Why it's wrong here
Not needed; consolidated billing is already in place.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think filtering by linked account in Cost Explorer is sufficient, but they overlook that without tags or a structured account naming convention, linking accounts to business units requires manual effort, which violates the 'without additional overhead' requirement.
Detailed technical explanation
How to think about this question
Cost allocation tags in AWS are key-value pairs that can be applied to resources at creation or after, and must be activated in the Billing and Cost Management console before they appear in cost reports. Tags are propagated to the payer account in a consolidated billing setup, enabling cross-account cost analysis via Cost Explorer or AWS Cost and Usage Reports (CUR). A common real-world scenario is using a tag like 'CostCenter' with values such as 'BU-123' to track costs for multiple business units across hundreds of accounts, which would be impractical with manual aggregation.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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: Apply tags to resources and enable cost allocation tags in Billing and Cost Management. — Option C is correct because applying tags to resources and enabling cost allocation tags in AWS Billing and Cost Management allows the finance team to categorize costs by business unit without additional overhead. Each business unit's AWS account can have resources tagged with a key like 'BusinessUnit', and once cost allocation tags are activated, Cost Explorer and cost reports can filter and group by these tags, providing automated cost tracking across accounts in AWS Organizations.
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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