- A
High availability
Why wrong: High availability refers to system uptime and resilience, not pricing models.
- B
Elasticity
Why wrong: Elasticity refers to the ability to scale resources up and down automatically, not specifically the pricing model.
- C
Pay-as-you-go pricing
Pay-as-you-go eliminates upfront commitments, charging only for resources consumed — a core advantage of cloud computing.
- D
Economies of scale
Why wrong: Economies of scale describe how AWS's massive purchasing power lowers costs for all customers, not the specific pay-per-use billing model.
Question 814 of 1,024
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. 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.
Which cloud computing characteristic allows a company to pay only for the compute resources they actually use, without upfront commitments?
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
✓
Pay-as-you-go pricing
Option C is correct because pay-as-you-go pricing is the cloud computing characteristic that enables a company to pay only for the compute resources they actually consume, with no upfront commitments or long-term contracts. This model aligns costs directly with usage, allowing organizations to avoid capital expenditure and scale spending based on demand. AWS implements this through services like EC2 On-Demand instances, where billing is per second (or per hour) with no minimum purchase required.
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.
- ✗
High availability
Why it's wrong here
High availability refers to system uptime and resilience, not pricing models.
- ✗
Elasticity
Why it's wrong here
Elasticity refers to the ability to scale resources up and down automatically, not specifically the pricing model.
- ✓
Pay-as-you-go pricing
Why this is correct
Pay-as-you-go eliminates upfront commitments, charging only for resources consumed — a core advantage of cloud computing.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Economies of scale
Why it's wrong here
Economies of scale describe how AWS's massive purchasing power lowers costs for all customers, not the specific pay-per-use billing model.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse elasticity (the ability to scale) with the pricing model itself, assuming that scaling automatically means pay-per-use, but elasticity is about resource adjustment while pay-as-you-go is the billing mechanism that charges only for consumed resources.
Detailed technical explanation
How to think about this question
Under the hood, pay-as-you-go pricing in AWS is implemented through metering and billing at fine-grained intervals—EC2 On-Demand instances are billed per second (minimum 60 seconds) for Linux instances, while Lambda charges per 1ms of execution time and per 1MB of memory allocated. This granularity ensures that customers only pay for the exact resources consumed, even for short-lived workloads like batch processing or burst traffic. A real-world scenario is a startup running a prototype on EC2 On-Demand, where they can terminate instances after testing and incur zero ongoing costs, avoiding the financial risk of reserved instances.
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
Learn the concepts, then practise the questions
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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: Pay-as-you-go pricing — Option C is correct because pay-as-you-go pricing is the cloud computing characteristic that enables a company to pay only for the compute resources they actually consume, with no upfront commitments or long-term contracts. This model aligns costs directly with usage, allowing organizations to avoid capital expenditure and scale spending based on demand. AWS implements this through services like EC2 On-Demand instances, where billing is per second (or per hour) with no minimum purchase required.
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
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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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