- A
Stop guessing about capacity
Why wrong: Capacity guessing relates to over- or under-provisioning. The shift from upfront capex to variable opex is the 'trade capital expense for variable expense' benefit.
- B
Benefit from economies of scale
Why wrong: Economies of scale relate to AWS's purchasing power reducing prices. Replacing upfront hardware investment with monthly usage-based payments is the capex-to-opex benefit.
- C
Trade capital expense for variable expense
Cloud computing replaces large upfront hardware investments (capital expenditure) with pay-as-you-go operating expense. This reduces financial risk, improves cash flow, and eliminates idle sunk-cost capacity.
- D
Increase speed and agility
Why wrong: Speed and agility refer to the rapid provisioning of resources. The financial model shift from capex to opex is a separate benefit.
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 used to spend $2 million upfront purchasing servers and building a data centre before launching a new product. With AWS, they provision resources as needed and pay monthly based on actual usage. Which cloud benefit does this represent?
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
Trade capital expense for variable expense
This scenario describes shifting from a large upfront capital expenditure (CapEx) on servers and data centers to a variable operational expenditure (OpEx) based on actual usage. AWS's pay-as-you-go model directly enables this trade, allowing the company to align costs with consumption rather than paying for idle capacity. This is the core benefit of trading capital expense for variable expense.
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.
- ✗
Stop guessing about capacity
Why it's wrong here
Capacity guessing relates to over- or under-provisioning. The shift from upfront capex to variable opex is the 'trade capital expense for variable expense' benefit.
- ✗
Benefit from economies of scale
Why it's wrong here
Economies of scale relate to AWS's purchasing power reducing prices. Replacing upfront hardware investment with monthly usage-based payments is the capex-to-opex benefit.
- ✓
Trade capital expense for variable expense
Why this is correct
Cloud computing replaces large upfront hardware investments (capital expenditure) with pay-as-you-go operating expense. This reduces financial risk, improves cash flow, and eliminates idle sunk-cost capacity.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Increase speed and agility
Why it's wrong here
Speed and agility refer to the rapid provisioning of resources. The financial model shift from capex to opex is a separate benefit.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the financial benefit of 'trading capital expense for variable expense' with the operational benefit of 'stop guessing about capacity,' as both involve avoiding over-provisioning, but the question specifically focuses on the payment model shift.
Detailed technical explanation
How to think about this question
Under the hood, AWS uses a consumption-based billing model where each service (e.g., EC2 per hour, S3 per GB stored, Lambda per invocation) generates a metered cost. This contrasts with traditional on-premises models where hardware depreciation, power, and cooling costs are fixed regardless of utilization. In a real-world scenario, a startup launching a new product can avoid a $2 million upfront data center build and instead pay $50,000 monthly for EC2 instances and RDS databases, scaling up or down as demand fluctuates.
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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Cloud Concepts — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Concepts — This question tests Cloud Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Trade capital expense for variable expense — This scenario describes shifting from a large upfront capital expenditure (CapEx) on servers and data centers to a variable operational expenditure (OpEx) based on actual usage. AWS's pay-as-you-go model directly enables this trade, allowing the company to align costs with consumption rather than paying for idle capacity. This is the core benefit of trading capital expense for variable expense.
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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