- A
AWS Pricing Calculator + Developer Support
Correct. The AWS Pricing Calculator lets you estimate monthly costs for AWS services before building the architecture. The Developer Support plan offers a response time of less than 12 hours for production issues that impair the system, which meets the stated requirement. This combination is cost-effective for a startup with limited budget.
- B
AWS Cost Explorer + Basic Support
Why wrong: Incorrect. AWS Cost Explorer is used to analyze historical cost and usage data, not to estimate future costs for an unbuilt architecture. Basic Support does not include technical support, so the startup would not get any guaranteed response time for production issues.
- C
AWS Budgets + Business Support
Why wrong: Incorrect. AWS Budgets is used to set cost alerts and track spending against budgets, not to estimate initial costs before building. Business Support offers faster response times (e.g., 1 hour for production system down) but is more expensive than Developer Support and provides more than what is required for a startup with limited budget.
- D
AWS Total Cost of Ownership (TCO) Calculator + Enterprise Support
Why wrong: Incorrect. The TCO Calculator compares the cost of running infrastructure on-premises vs. on AWS, which is not relevant for a startup that does not have existing on-premises infrastructure. Enterprise Support is the highest tier with a designated Technical Account Manager and is very expensive, far beyond the needs of a small startup with limited budget.
CLF-C02 Billing, Pricing, and Support Practice Question
This CLF-C02 practice question tests your understanding of billing, pricing, and support. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 startup is planning to build and launch a new mobile application on AWS. The team expects very low initial traffic but hopes to scale rapidly. They have a limited budget and want to avoid any upfront costs. They are unsure which AWS services they will need and want to estimate their monthly AWS charges before committing to an architecture. Additionally, they need access to technical support to help troubleshoot issues that arise during development and production, with a guaranteed response time of less than 12 hours for production-impacting issues. Which combination of AWS tool and support plan should the startup choose to meet these requirements?
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 Pricing Calculator + Developer Support
The AWS Pricing Calculator allows the startup to estimate monthly costs without any upfront commitment, which aligns with their need to avoid upfront costs and predict charges before architecting. The Developer Support plan provides a response time of less than 12 hours for production-impacting issues (specifically, a response time of 12 hours for impaired production systems under the Developer plan), meeting their support requirement while keeping costs low for a startup with limited budget.
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 Pricing Calculator + Developer Support
Why this is correct
Correct. The AWS Pricing Calculator lets you estimate monthly costs for AWS services before building the architecture. The Developer Support plan offers a response time of less than 12 hours for production issues that impair the system, which meets the stated requirement. This combination is cost-effective for a startup with limited budget.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Cost Explorer + Basic Support
Why it's wrong here
Incorrect. AWS Cost Explorer is used to analyze historical cost and usage data, not to estimate future costs for an unbuilt architecture. Basic Support does not include technical support, so the startup would not get any guaranteed response time for production issues.
When this WOULD be correct
A company with existing AWS usage wants to analyze past spending patterns to optimize costs, and only needs 24/7 access to documentation and basic support without any response time guarantees.
- ✗
AWS Budgets + Business Support
Why it's wrong here
Incorrect. AWS Budgets is used to set cost alerts and track spending against budgets, not to estimate initial costs before building. Business Support offers faster response times (e.g., 1 hour for production system down) but is more expensive than Developer Support and provides more than what is required for a startup with limited budget.
When this WOULD be correct
A company already has a detailed architecture and wants to set cost thresholds and receive alerts when spending exceeds a certain amount, while needing faster support (1-hour response) for critical production issues. In that case, AWS Budgets + Business Support would be appropriate.
- ✗
AWS Total Cost of Ownership (TCO) Calculator + Enterprise Support
Why it's wrong here
Incorrect. The TCO Calculator compares the cost of running infrastructure on-premises vs. on AWS, which is not relevant for a startup that does not have existing on-premises infrastructure. Enterprise Support is the highest tier with a designated Technical Account Manager and is very expensive, far beyond the needs of a small startup with limited budget.
When this WOULD be correct
A question where a company wants to compare the total cost of ownership between running workloads on-premises versus on AWS, and requires the highest level of support with <15 minute response for critical issues, such as a large enterprise with compliance needs.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓AWS Pricing Calculator + Developer SupportCorrect answer▾
Why this is correct
Correct. The AWS Pricing Calculator lets you estimate monthly costs for AWS services before building the architecture. The Developer Support plan offers a response time of less than 12 hours for production issues that impair the system, which meets the stated requirement. This combination is cost-effective for a startup with limited budget.
✗AWS Cost Explorer + Basic SupportWrong answer — click to see why▾
Why this is wrong here
AWS Cost Explorer is for analyzing historical costs, not estimating future charges for an unbuilt architecture. Basic Support does not provide a guaranteed response time of less than 12 hours for production-impacting issues.
★ When this WOULD be the correct answer
A company with existing AWS usage wants to analyze past spending patterns to optimize costs, and only needs 24/7 access to documentation and basic support without any response time guarantees.
Why candidates choose this
Candidates may confuse Cost Explorer with a pricing estimation tool, and assume Basic Support is sufficient for development, overlooking the specific response time requirement.
✗AWS Budgets + Business SupportWrong answer — click to see why▾
Why this is wrong here
AWS Budgets allows you to set cost alerts but does not provide cost estimation for unknown architectures. Business Support offers 1-hour response for production-impacting issues, but the question requires a guaranteed response time of less than 12 hours, which Developer Support meets (less than 12 hours for production systems impaired).
★ When this WOULD be the correct answer
A company already has a detailed architecture and wants to set cost thresholds and receive alerts when spending exceeds a certain amount, while needing faster support (1-hour response) for critical production issues. In that case, AWS Budgets + Business Support would be appropriate.
Why candidates choose this
Candidates may think 'Budgets' helps estimate costs and 'Business Support' is better than Developer, overlooking that the question asks for cost estimation before committing to an architecture and only requires less than 12-hour response.
✗AWS Total Cost of Ownership (TCO) Calculator + Enterprise SupportWrong answer — click to see why▾
Why this is wrong here
The TCO Calculator compares on-premises vs. cloud costs, not estimating monthly AWS charges for a new architecture. Enterprise Support is overkill and expensive for a startup with limited budget needing <12 hour response for production issues.
★ When this WOULD be the correct answer
A question where a company wants to compare the total cost of ownership between running workloads on-premises versus on AWS, and requires the highest level of support with <15 minute response for critical issues, such as a large enterprise with compliance needs.
Why candidates choose this
Candidates may think 'TCO Calculator' estimates costs (confusing it with Pricing Calculator) and assume 'Enterprise Support' is always best, overlooking the startup's budget constraints and specific support response requirement.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Cost Explorer (a historical analysis tool) with the AWS Pricing Calculator (a future estimation tool), and they may assume Basic Support includes support SLAs when it does not, leading them to choose Option B incorrectly.
Detailed technical explanation
How to think about this question
The AWS Pricing Calculator (formerly Simple Monthly Calculator) allows users to model services like EC2, Lambda, and DynamoDB with specific configurations (e.g., instance type, storage, data transfer) to generate a monthly estimate, supporting what-if scenarios without incurring costs. The Developer Support plan is the lowest paid tier that includes a 12-hour response time for production systems impaired, which is the exact SLA required, while Basic Support offers no SLAs and only access to forums and documentation.
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 Pricing Calculator + Developer Support — The AWS Pricing Calculator allows the startup to estimate monthly costs without any upfront commitment, which aligns with their need to avoid upfront costs and predict charges before architecting. The Developer Support plan provides a response time of less than 12 hours for production-impacting issues (specifically, a response time of 12 hours for impaired production systems under the Developer plan), meeting their support requirement while keeping costs low for a startup with limited budget.
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
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