- A
Delete all non-production resources immediately
Why wrong: Deleting resources without understanding their purpose is risky — cost governance should attribute costs first, then make informed decisions about optimization.
- B
Implement a tagging strategy and enforce tags with AWS Config rules
Tagging provides cost attribution by team/project/environment — the foundation for governance. Config rules enforce tagging compliance so resources can always be traced to a business owner.
- C
Switch all resources to Spot Instances
Why wrong: Spot Instances are appropriate only for interruptible workloads — applying them universally would disrupt production systems.
- D
Enable all AWS services to trigger CloudWatch alarms
Why wrong: CloudWatch alarms monitor metrics — enabling them for all services doesn't address cost attribution or governance.
Quick Answer
The answer is implementing a tagging strategy and enforcing tags with AWS Config rules. This is a foundational cost governance control in AWS because tags provide the metadata needed to allocate costs by project, environment, or cost center, while AWS Config rules automatically enforce that all resources are properly tagged, preventing untagged resources from being launched and ensuring consistent cost tracking. On the AWS Certified Cloud Practitioner CLF-C02 exam, this concept tests your understanding that cost governance begins with visibility and accountability—not just setting budgets or alerts. A common trap is choosing a reactive control like a billing alarm instead of a proactive governance mechanism like tag enforcement. Remember the memory tip: "Tag first, govern later"—tags are the bedrock of cost allocation, and AWS Config rules are the enforcer that keeps your tagging policy honest.
CLF-C02 Billing, Pricing, and Support Practice Question
This CLF-C02 practice question tests your understanding of billing, pricing, and support. 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's AWS bill has increased significantly. The finance team wants to implement cost governance best practices. Which action represents a foundational cost governance control?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Implement a tagging strategy and enforce tags with AWS Config rules
Implementing a tagging strategy and enforcing tags with AWS Config rules is a foundational cost governance control because it enables cost allocation, tracking, and accountability. Tags allow the finance team to categorize resources by project, environment, or cost center, and AWS Config rules can automatically enforce tag compliance, preventing untagged resources from being launched. This directly supports cost governance by providing visibility and control over spending, which is the first step in optimizing costs.
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.
- ✗
Delete all non-production resources immediately
Why it's wrong here
Deleting resources without understanding their purpose is risky — cost governance should attribute costs first, then make informed decisions about optimization.
- ✓
Implement a tagging strategy and enforce tags with AWS Config rules
Why this is correct
Tagging provides cost attribution by team/project/environment — the foundation for governance. Config rules enforce tagging compliance so resources can always be traced to a business owner.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Switch all resources to Spot Instances
Why it's wrong here
Spot Instances are appropriate only for interruptible workloads — applying them universally would disrupt production systems.
- ✗
Enable all AWS services to trigger CloudWatch alarms
Why it's wrong here
CloudWatch alarms monitor metrics — enabling them for all services doesn't address cost attribution or governance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse cost-saving mechanisms (like Spot Instances or deleting resources) with cost governance controls, which are about establishing policies and visibility (like tagging and enforcement) rather than immediate cost reduction actions.
Detailed technical explanation
How to think about this question
AWS Config rules can evaluate resource configurations against desired policies, such as requiring specific cost-allocation tags (e.g., 'CostCenter' or 'Project') on EC2 instances, S3 buckets, and RDS databases. When a non-compliant resource is detected, AWS Config can trigger auto-remediation via AWS Systems Manager Automation or invoke a Lambda function to stop or tag the resource. In a real-world scenario, a company might use a custom AWS Config rule to enforce that all resources have a 'Environment' tag (e.g., 'Production', 'Development') and a 'Owner' tag, enabling the finance team to generate cost reports in AWS Cost Explorer filtered by these tags.
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.
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Billing, Pricing, and Support — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Billing, Pricing, and Support — This question tests Billing, Pricing, and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement a tagging strategy and enforce tags with AWS Config rules — Implementing a tagging strategy and enforcing tags with AWS Config rules is a foundational cost governance control because it enables cost allocation, tracking, and accountability. Tags allow the finance team to categorize resources by project, environment, or cost center, and AWS Config rules can automatically enforce tag compliance, preventing untagged resources from being launched. This directly supports cost governance by providing visibility and control over spending, which is the first step in optimizing costs.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This CLF-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 CLF-C02 exam.
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