- A
AWS Cost Explorer
Why wrong: AWS Cost Explorer is a tool for visualizing, understanding, and managing AWS costs and usage over time. It analyzes historical spending data and provides forecasts, but it is not designed to generate future cost estimates for a specific, unbuilt resource configuration.
- B
AWS Budgets
Why wrong: AWS Budgets allows you to set custom budgets to track your cost and usage and receive alerts when you exceed (or are forecasted to exceed) your budget. It is used for monitoring spending, not for creating initial cost estimates for a planned architecture.
- C
AWS Pricing Calculator
The AWS Pricing Calculator (formerly the Simple Monthly Calculator) enables you to explore AWS services and create an estimate for your use cases. You can specify resource configurations, including instance types, storage, data transfer, and more, to generate a detailed monthly cost estimate. This directly meets the architect's requirement.
- D
AWS Total Cost of Ownership (TCO) Calculator
Why wrong: The AWS TCO Calculator is used to compare the cost of running an on-premises infrastructure versus running the same workload on AWS. It provides a high-level comparison based on typical assumptions, but it is not designed to generate a detailed monthly cost estimate for a specific AWS resource configuration.
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 is planning to migrate its on-premises database and web application to AWS. The solutions architect needs to provide a detailed monthly cost estimate for the AWS resources that will be used, including Amazon EC2 instances, Amazon RDS database instances, and Amazon S3 storage. The architect wants to specify instance types, storage sizes, data transfer amounts, and other parameters to get a precise estimate before building the environment. Which AWS tool should the architect use?
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
The AWS Pricing Calculator (formerly Simple Monthly Calculator) allows users to specify exact instance types, storage sizes, data transfer amounts, and other parameters for services like EC2, RDS, and S3 to generate a detailed monthly cost estimate before provisioning resources. This makes it the correct tool for the architect's requirement of a precise, pre-build cost estimate.
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 managing AWS costs and usage over time. It analyzes historical spending data and provides forecasts, but it is not designed to generate future cost estimates for a specific, unbuilt resource configuration.
- ✗
AWS Budgets
Why it's wrong here
AWS Budgets allows you to set custom budgets to track your cost and usage and receive alerts when you exceed (or are forecasted to exceed) your budget. It is used for monitoring spending, not for creating initial cost estimates for a planned architecture.
- ✓
AWS Pricing Calculator
Why this is correct
The AWS Pricing Calculator (formerly the Simple Monthly Calculator) enables you to explore AWS services and create an estimate for your use cases. You can specify resource configurations, including instance types, storage, data transfer, and more, to generate a detailed monthly cost estimate. This directly meets the architect's requirement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Total Cost of Ownership (TCO) Calculator
Why it's wrong here
The AWS TCO Calculator is used to compare the cost of running an on-premises infrastructure versus running the same workload on AWS. It provides a high-level comparison based on typical assumptions, but it is not designed to generate a detailed monthly cost estimate for a specific AWS resource configuration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the AWS Pricing Calculator (for future estimates) with AWS Cost Explorer (for past analysis), or they mistakenly think the TCO Calculator provides the same detailed monthly breakdown for specific AWS resources.
Detailed technical explanation
How to think about this question
The AWS Pricing Calculator uses real-time pricing data from the AWS Price List API, allowing it to reflect current On-Demand, Reserved Instance, and Savings Plan rates. It supports granular inputs like EBS volume types (gp3, io2), data transfer tiers (e.g., 0-10 TB at $0.09/GB for internet egress), and RDS Multi-AZ configurations, which directly impact the monthly total. In a real-world scenario, an architect might use it to compare costs of a t3.medium vs. t3.large EC2 instance with 100 GB gp3 storage and 500 GB monthly data transfer to validate budget alignment before a migration.
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: AWS Pricing Calculator — The AWS Pricing Calculator (formerly Simple Monthly Calculator) allows users to specify exact instance types, storage sizes, data transfer amounts, and other parameters for services like EC2, RDS, and S3 to generate a detailed monthly cost estimate before provisioning resources. This makes it the correct tool for the architect's requirement of a precise, pre-build cost estimate.
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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