- A
AWS Cost Explorer
Why wrong: AWS Cost Explorer is a tool for visualizing, understanding, and analyzing your costs and usage. It does not provide the ability to define automated actions when budget thresholds are exceeded. Therefore, it cannot automatically stop EC2 instances.
- B
AWS Budgets with budget actions
AWS Budgets enables you to set custom budgets (e.g., monthly cost budget). With budget actions, you can configure automated responses when actual or forecasted costs exceed budget thresholds. For example, you can define an action to stop non-critical EC2 instances when the forecast exceeds $6,000. This fully meets the requirement.
- C
AWS Trusted Advisor
Why wrong: AWS Trusted Advisor inspects your AWS environment and makes recommendations across categories including cost optimization. It can identify underutilized instances but does not execute automated actions (like stopping instances) based on budget thresholds. It is a recommendation engine, not an automation tool.
- D
AWS Cost Anomaly Detection
Why wrong: AWS Cost Anomaly Detection uses machine learning to detect unusual spending patterns and sends alerts via email or Amazon SNS. It does not support automated remediation actions such as stopping EC2 instances. Its purpose is detection and notification, not automated response.
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 has a development environment running on Amazon EC2 instances. To control costs, the team wants to set a monthly budget of $5,000 for this environment. If the forecasted cost for the month exceeds $6,000 (20% over budget), they want AWS to automatically stop all non-critical EC2 instances to prevent further spending. Which AWS feature should the team use to implement this automated cost control?
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
AWS Budgets with budget actions
AWS Budgets with budget actions allows you to set a monthly budget of $5,000 and define an action that triggers when the forecasted cost exceeds a specified threshold (e.g., 20% over budget, or $6,000). The action can automatically stop non-critical EC2 instances using an IAM role and a predefined runbook, directly enforcing cost control without manual intervention. This is the only AWS feature that combines budget monitoring with automated remediation actions.
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.
- ✗
AWS Cost Explorer
Why it's wrong here
AWS Cost Explorer is a tool for visualizing, understanding, and analyzing your costs and usage. It does not provide the ability to define automated actions when budget thresholds are exceeded. Therefore, it cannot automatically stop EC2 instances.
- ✓
AWS Budgets with budget actions
Why this is correct
AWS Budgets enables you to set custom budgets (e.g., monthly cost budget). With budget actions, you can configure automated responses when actual or forecasted costs exceed budget thresholds. For example, you can define an action to stop non-critical EC2 instances when the forecast exceeds $6,000. This fully meets the requirement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Trusted Advisor
Why it's wrong here
AWS Trusted Advisor inspects your AWS environment and makes recommendations across categories including cost optimization. It can identify underutilized instances but does not execute automated actions (like stopping instances) based on budget thresholds. It is a recommendation engine, not an automation tool.
- ✗
AWS Cost Anomaly Detection
Why it's wrong here
AWS Cost Anomaly Detection uses machine learning to detect unusual spending patterns and sends alerts via email or Amazon SNS. It does not support automated remediation actions such as stopping EC2 instances. Its purpose is detection and notification, not automated response.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Budgets (which can trigger actions) with AWS Cost Explorer (which only provides reporting) or AWS Cost Anomaly Detection (which only alerts), failing to recognize that only AWS Budgets with budget actions supports automated remediation.
Detailed technical explanation
How to think about this question
AWS Budgets actions use AWS Identity and Access Management (IAM) roles and AWS Systems Manager Automation runbooks to perform actions like stopping or terminating EC2 instances. The action is triggered when the actual or forecasted cost exceeds the defined threshold, and it can be applied to specific resources using tags (e.g., 'critical: false'). This feature integrates with AWS Organizations for multi-account budget enforcement, and the action can be set to run only once per budget period to avoid repeated triggers.
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.
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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: AWS Budgets with budget actions — AWS Budgets with budget actions allows you to set a monthly budget of $5,000 and define an action that triggers when the forecasted cost exceeds a specified threshold (e.g., 20% over budget, or $6,000). The action can automatically stop non-critical EC2 instances using an IAM role and a predefined runbook, directly enforcing cost control without manual intervention. This is the only AWS feature that combines budget monitoring with automated remediation actions.
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.
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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