- A
AWS Pricing Calculator
Correct. The AWS Pricing Calculator allows users to estimate monthly costs for AWS services, model different configurations, and share estimate links with stakeholders. It is designed for pre-migration cost planning.
- B
AWS Cost Explorer
Why wrong: Incorrect. AWS Cost Explorer provides visualization and analysis of historical AWS costs and usage, along with forecasting. It does not generate upfront estimates for planned resources before they are deployed.
- C
AWS Budgets
Why wrong: Incorrect. AWS Budgets is used to set spending limits and receive alerts when costs exceed thresholds. It does not provide the detailed, customizable cost estimates needed for planning a new migration.
- D
AWS Cost and Usage Report
Why wrong: Incorrect. The AWS Cost and Usage Report contains the most detailed billing data, but it is generated after the resources have been used. It cannot produce estimates for resources that have not yet been launched.
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 plans to migrate a three-tier web application to AWS. The application will run on Amazon EC2 instances, use an Amazon RDS database, and an Application Load Balancer. The CFO needs a detailed monthly cost estimate before migration. The solutions architect needs to model different instance types, storage sizes, and data transfer volumes, and then share the estimate with the finance team. Which AWS service should the solutions architect use 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
AWS Pricing Calculator allows the solutions architect to model different EC2 instance types, RDS storage sizes, and data transfer volumes to generate a detailed monthly cost estimate. It provides granular control over pricing assumptions, including reserved vs. on-demand instances, and produces a shareable estimate link for the finance team. This makes it the correct tool for pre-migration cost modeling.
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
Why this is correct
Correct. The AWS Pricing Calculator allows users to estimate monthly costs for AWS services, model different configurations, and share estimate links with stakeholders. It is designed for pre-migration cost planning.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Cost Explorer
Why it's wrong here
Incorrect. AWS Cost Explorer provides visualization and analysis of historical AWS costs and usage, along with forecasting. It does not generate upfront estimates for planned resources before they are deployed.
When this WOULD be correct
A company has been running on AWS for several months and wants to visualize and analyze their past spending patterns to identify cost-saving opportunities or forecast future costs based on historical data.
- ✗
AWS Budgets
Why it's wrong here
Incorrect. AWS Budgets is used to set spending limits and receive alerts when costs exceed thresholds. It does not provide the detailed, customizable cost estimates needed for planning a new migration.
When this WOULD be correct
A company wants to set a monthly cost limit for an existing AWS environment and receive alerts when spending approaches or exceeds the budget. The solutions architect needs to configure proactive notifications to avoid overspending.
- ✗
AWS Cost and Usage Report
Why it's wrong here
Incorrect. The AWS Cost and Usage Report contains the most detailed billing data, but it is generated after the resources have been used. It cannot produce estimates for resources that have not yet been launched.
When this WOULD be correct
A company needs to analyze historical AWS spending patterns and allocate costs by tags or accounts for chargeback reporting. The Cost and Usage Report would be used to generate a detailed CSV of past usage and costs.
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 CalculatorCorrect answer▾
Why this is correct
Correct. The AWS Pricing Calculator allows users to estimate monthly costs for AWS services, model different configurations, and share estimate links with stakeholders. It is designed for pre-migration cost planning.
✗AWS Cost ExplorerWrong answer — click to see why▾
Why this is wrong here
AWS Cost Explorer analyzes historical costs and usage, but cannot model future costs for different instance types, storage sizes, or data transfer volumes before migration.
★ When this WOULD be the correct answer
A company has been running on AWS for several months and wants to visualize and analyze their past spending patterns to identify cost-saving opportunities or forecast future costs based on historical data.
Why candidates choose this
Candidates may confuse Cost Explorer with a cost estimation tool because its name suggests exploring costs, and they might think it can be used for upfront cost modeling.
✗AWS BudgetsWrong answer — click to see why▾
Why this is wrong here
AWS Budgets is used to set cost thresholds and receive alerts, not to generate detailed cost estimates for different configurations before migration.
★ When this WOULD be the correct answer
A company wants to set a monthly cost limit for an existing AWS environment and receive alerts when spending approaches or exceeds the budget. The solutions architect needs to configure proactive notifications to avoid overspending.
Why candidates choose this
Candidates may confuse budgeting with cost estimation, thinking that AWS Budgets can provide cost projections for planned resources.
✗AWS Cost and Usage ReportWrong answer — click to see why▾
Why this is wrong here
AWS Cost and Usage Report provides detailed billing data after usage, not upfront cost estimates for modeling different configurations before migration.
★ When this WOULD be the correct answer
A company needs to analyze historical AWS spending patterns and allocate costs by tags or accounts for chargeback reporting. The Cost and Usage Report would be used to generate a detailed CSV of past usage and costs.
Why candidates choose this
Candidates may confuse detailed cost reporting with cost estimation, assuming that a report that tracks usage can also predict future costs.
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 confuse AWS Cost Explorer (a historical analysis tool) with AWS Pricing Calculator (a future estimation tool), or assume AWS Budgets can generate cost estimates when it only monitors and alerts on actual spend against predefined budgets.
Detailed technical explanation
How to think about this question
AWS Pricing Calculator uses real-time pricing data from the AWS Price List API, allowing users to toggle between On-Demand, Reserved Instance (Standard/Convertible), and Savings Plans pricing models. It also supports estimating data transfer costs across regions and internet egress, which is critical for three-tier applications with an ALB. The tool outputs a consolidated estimate in a shareable URL or CSV, enabling iterative what-if analysis without incurring any actual charges.
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
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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 — AWS Pricing Calculator allows the solutions architect to model different EC2 instance types, RDS storage sizes, and data transfer volumes to generate a detailed monthly cost estimate. It provides granular control over pricing assumptions, including reserved vs. on-demand instances, and produces a shareable estimate link for the finance team. This makes it the correct tool for pre-migration cost modeling.
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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