- A
AWS Pricing Calculator
Why wrong: The AWS Pricing Calculator is used to estimate the monthly cost of AWS services for new deployments. It does not accept on-premises specifications as input and does not generate a TCO comparison against existing infrastructure.
- B
AWS Cost Explorer
Why wrong: AWS Cost Explorer provides visualizations and analysis of historical AWS usage and costs. It does not accept on-premises infrastructure details and cannot compare costs between on-premises and AWS.
- C
AWS Total Cost of Ownership (TCO) Calculator
The AWS TCO Calculator is specifically designed to help organizations compare the costs of running their current on-premises workloads against AWS. It accepts detailed on-premises specifications and produces a comparative TCO report, including potential savings over multiple years.
- D
AWS Simple Monthly Calculator
Why wrong: The AWS Simple Monthly Calculator was an earlier tool for estimating AWS service costs but has been replaced by the AWS Pricing Calculator. It is not designed to accept on-premises inputs or perform TCO comparisons.
AWS TCO Calculator — Migration Cost Comparison | AWS Cloud Practitioner Explained
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 data center to AWS. The finance team needs to compare the current on-premises infrastructure costs (including servers, storage, networking, and personnel) against the projected costs of running identical workloads on AWS over a three-year period. The team wants to input detailed specifications of their existing hardware and get a comprehensive report that highlights potential savings and provides a total cost of ownership (TCO) comparison. Which AWS tool should the finance team 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 Total Cost of Ownership (TCO) Calculator
The AWS Total Cost of Ownership (TCO) Calculator is specifically designed to compare the costs of on-premises infrastructure with AWS, allowing users to input detailed hardware specifications (servers, storage, networking) and generate a comprehensive report that highlights potential savings over a chosen period (e.g., three years). This tool directly addresses the finance team's need for a TCO comparison, including personnel costs, which is not a feature of other AWS calculators.
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 it's wrong here
The AWS Pricing Calculator is used to estimate the monthly cost of AWS services for new deployments. It does not accept on-premises specifications as input and does not generate a TCO comparison against existing infrastructure.
When this WOULD be correct
A company wants to estimate the monthly cost of running a specific workload on AWS, such as a web application with EC2 instances and RDS databases, before deployment. The AWS Pricing Calculator would be used to input resource specifications and generate a cost estimate.
- ✗
AWS Cost Explorer
Why it's wrong here
AWS Cost Explorer provides visualizations and analysis of historical AWS usage and costs. It does not accept on-premises infrastructure details and cannot compare costs between on-premises and AWS.
When this WOULD be correct
A company has been running workloads on AWS for a year and wants to analyze spending patterns, identify cost drivers, and forecast future costs. The finance team needs to view monthly costs by service or linked account.
- ✓
AWS Total Cost of Ownership (TCO) Calculator
Why this is correct
The AWS TCO Calculator is specifically designed to help organizations compare the costs of running their current on-premises workloads against AWS. It accepts detailed on-premises specifications and produces a comparative TCO report, including potential savings over multiple years.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Simple Monthly Calculator
Why it's wrong here
The AWS Simple Monthly Calculator was an earlier tool for estimating AWS service costs but has been replaced by the AWS Pricing Calculator. It is not designed to accept on-premises inputs or perform TCO comparisons.
When this WOULD be correct
A candidate would use the AWS Simple Monthly Calculator when they need a quick, high-level estimate of monthly costs for a few AWS services without requiring detailed on-premises infrastructure input or a full TCO analysis.
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 Total Cost of Ownership (TCO) CalculatorCorrect answer▾
Why this is correct
The AWS TCO Calculator is specifically designed to help organizations compare the costs of running their current on-premises workloads against AWS. It accepts detailed on-premises specifications and produces a comparative TCO report, including potential savings over multiple years.
✗AWS Pricing CalculatorWrong answer — click to see why▾
Why this is wrong here
The AWS Pricing Calculator estimates costs for new AWS architectures but does not compare existing on-premises infrastructure costs or provide a TCO analysis over a three-year period.
★ When this WOULD be the correct answer
A company wants to estimate the monthly cost of running a specific workload on AWS, such as a web application with EC2 instances and RDS databases, before deployment. The AWS Pricing Calculator would be used to input resource specifications and generate a cost estimate.
Why candidates choose this
Candidates may confuse the AWS Pricing Calculator with the TCO Calculator because both involve cost estimation, but the Pricing Calculator focuses on AWS service costs rather than comparing on-premises vs. cloud TCO.
✗AWS Cost ExplorerWrong answer — click to see why▾
Why this is wrong here
AWS Cost Explorer is used for analyzing historical cost and usage data, not for comparing on-premises costs with AWS costs before migration.
★ When this WOULD be the correct answer
A company has been running workloads on AWS for a year and wants to analyze spending patterns, identify cost drivers, and forecast future costs. The finance team needs to view monthly costs by service or linked account.
Why candidates choose this
Candidates may confuse Cost Explorer with a cost comparison tool because its name suggests exploring costs, but it lacks the ability to input on-premises infrastructure details for TCO analysis.
✗AWS Simple Monthly CalculatorWrong answer — click to see why▾
Why this is wrong here
The AWS Simple Monthly Calculator is a legacy tool that provides basic cost estimates for individual AWS services, but it does not accept detailed on-premises hardware specifications or generate a comprehensive TCO comparison report over a multi-year period.
★ When this WOULD be the correct answer
A candidate would use the AWS Simple Monthly Calculator when they need a quick, high-level estimate of monthly costs for a few AWS services without requiring detailed on-premises infrastructure input or a full TCO analysis.
Why candidates choose this
Candidates may confuse it with the AWS Pricing Calculator or TCO Calculator because its name suggests simplicity for cost estimation, and they might not be aware that it has been replaced by the AWS Pricing Calculator for most use cases.
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 the AWS Pricing Calculator (for estimating future AWS costs) with the TCO Calculator (for comparing on-premises vs. AWS costs), leading them to select option A instead of the correct C.
Detailed technical explanation
How to think about this question
The AWS TCO Calculator uses a detailed questionnaire to capture on-premises server counts, storage types (e.g., SAN, NAS), network bandwidth, and even personnel costs (e.g., system administrators). It then maps these to equivalent AWS services (e.g., EC2 instances, EBS volumes, Direct Connect) and applies factors like utilization rates, power/cooling, and labor savings to compute a three-year TCO comparison. A subtle behavior is that the tool assumes a 30% utilization rate for on-premises servers by default, which can significantly impact savings projections if not adjusted.
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 Total Cost of Ownership (TCO) Calculator — The AWS Total Cost of Ownership (TCO) Calculator is specifically designed to compare the costs of on-premises infrastructure with AWS, allowing users to input detailed hardware specifications (servers, storage, networking) and generate a comprehensive report that highlights potential savings over a chosen period (e.g., three years). This tool directly addresses the finance team's need for a TCO comparison, including personnel costs, which is not a feature of other AWS calculators.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
4 more ways this is tested on CLF-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company's IT director wants to present a business case for migrating from on-premises infrastructure to AWS. They need to compare the full cost of running on-premises (hardware, facilities, power, labour) against the cost of running equivalent workloads on AWS. Which AWS tool helps create this comparison?
medium- A.AWS Pricing Calculator
- B.AWS Cost Explorer
- ✓ C.AWS TCO Calculator
- D.AWS Budgets
Why C: Option C is correct because the AWS TCO (Total Cost of Ownership) Calculator is specifically designed to compare the full costs of running on-premises infrastructure (including hardware, facilities, power, and labor) against the equivalent costs on AWS. It generates a detailed side-by-side cost comparison report, helping IT directors build a business case for migration by quantifying potential savings.
Variation 2. A company is planning to migrate its on-premises data center to AWS. The Chief Financial Officer wants to compare the total cost of ownership (TCO) of the current on-premises infrastructure against running equivalent workloads on AWS. The company needs a tool that allows them to input details about their existing servers, storage, and network usage to generate a detailed cost comparison report. Which AWS tool should the company use to meet this requirement?
medium- A.AWS Pricing Calculator
- ✓ B.AWS Total Cost of Ownership (TCO) Calculator
- C.AWS Budgets
- D.AWS Cost Explorer
Why B: The AWS Total Cost of Ownership (TCO) Calculator is specifically designed to compare the costs of on-premises infrastructure with AWS by allowing users to input details about their existing servers, storage, and network usage. It generates a detailed report that highlights potential savings from migrating to AWS, directly addressing the CFO's requirement for a cost comparison.
Variation 3. A company currently runs its infrastructure in a colocation data center. The CIO wants to estimate the total cost of ownership (TCO) of migrating the existing workload to AWS, compared to continuing with the on-premises solution. The company has detailed data on current server specifications, power, cooling, and labor costs. Which AWS tool should the company use to perform this analysis?
easy- A.AWS Pricing Calculator
- ✓ B.AWS Total Cost of Ownership (TCO) Calculator
- C.AWS Cost Explorer
- D.AWS Budgets
Why B: The AWS Total Cost of Ownership (TCO) Calculator is specifically designed to compare the costs of running infrastructure on-premises versus on AWS. It allows you to input detailed data on server specifications, power, cooling, and labor costs to generate a side-by-side TCO comparison, which directly meets the CIO's requirement.
Variation 4. A company is evaluating a migration of its on-premises data center to AWS. The CIO wants a detailed report that compares the total cost of ownership (TCO) of the current on-premises infrastructure versus running the equivalent workloads on AWS. The report should include costs for hardware, software, labor, power, cooling, and facilities. Which AWS tool should the company use to generate this comparison?
medium- A.AWS Pricing Calculator
- ✓ B.AWS Total Cost of Ownership (TCO) Calculator
- C.AWS Cost Explorer
- D.AWS Trusted Advisor
Why B: The AWS Total Cost of Ownership (TCO) Calculator is specifically designed to compare the costs of on-premises infrastructure with AWS, including hardware, software, labor, power, cooling, and facilities. It generates a detailed report that breaks down these cost categories, making it the correct tool for the CIO's requirement.
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Last reviewed: Jun 11, 2026
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