The answer is On-Demand pricing. This model is the correct choice for a short-term proof-of-concept project lasting only one month because it charges by the hour or second with no upfront payment or long-term commitment, allowing you to launch EC2 and RDS instances and terminate them immediately when the month ends without any penalty. On the AWS Certified Cloud Practitioner CLF-C02 exam, this scenario tests your understanding of the fundamental trade-off between flexibility and cost savings: On-Demand is ideal for unpredictable or temporary workloads, while Reserved or Savings Plans are traps for long-term commitments. A common trick is that candidates see “one month” and think of a Reserved Instance, but Reserved Instances require a minimum one-year term, making them unsuitable here. For your memory tip: think “On-Demand for one-month demand” — if the project is short and temporary, you pay as you go and stop when you go.
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 wants to use AWS for a short-term proof-of-concept project lasting one month. They need EC2 instances and RDS databases but don't want any long-term commitment. Which pricing model is most appropriate?
Why wrong: A 1-year commitment and full upfront payment is inappropriate for a one-month PoC — you'd pay for 11 months of unused capacity.
B
On-Demand pricing
On-Demand pricing requires no commitment, allows termination at any time, and provides full flexibility — perfect for a time-bounded proof-of-concept.
C
Savings Plans (3-year commitment)
Why wrong: A 3-year commitment is completely inappropriate for a one-month PoC — the commitment would continue long after the project ends.
D
Spot Instances for all workloads
Why wrong: Spot Instances are interruptible — databases and other stateful workloads in a PoC need reliable availability, making On-Demand more appropriate.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
On-Demand pricing
On-Demand pricing is the most appropriate for a short-term proof-of-concept lasting only one month because it requires no upfront payment or long-term commitment. You pay for compute and database capacity by the hour or second, and you can stop or terminate resources at any time without penalty. This aligns perfectly with the temporary, flexible nature of a one-month project.
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.
✗
Reserved Instances (1-year, All Upfront)
Why it's wrong here
A 1-year commitment and full upfront payment is inappropriate for a one-month PoC — you'd pay for 11 months of unused capacity.
✓
On-Demand pricing
Why this is correct
On-Demand pricing requires no commitment, allows termination at any time, and provides full flexibility — perfect for a time-bounded proof-of-concept.
Related concept
Read the scenario before looking for a memorised answer.
✗
Savings Plans (3-year commitment)
Why it's wrong here
A 3-year commitment is completely inappropriate for a one-month PoC — the commitment would continue long after the project ends.
✗
Spot Instances for all workloads
Why it's wrong here
Spot Instances are interruptible — databases and other stateful workloads in a PoC need reliable availability, making On-Demand more appropriate.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates might choose Spot Instances thinking they are always the cheapest option, but they overlook the fact that Spot Instances can be interrupted and are not supported for RDS, making them inappropriate for a proof-of-concept that requires consistent database availability.
Detailed technical explanation
How to think about this question
On-Demand pricing for EC2 and RDS is billed per second (with a minimum of 60 seconds) for Linux instances and per hour for Windows, giving granular control over costs. For a one-month proof-of-concept, you can launch a t3.micro EC2 instance and a db.t3.micro RDS instance, run them for exactly 30 days, and then terminate them with zero residual charges. This contrasts with Reserved Instances, which require a fixed term and upfront payment, and Spot Instances, which use a bidding model and can be reclaimed by AWS at any time, making them unsuitable for stateful services like RDS.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
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: On-Demand pricing — On-Demand pricing is the most appropriate for a short-term proof-of-concept lasting only one month because it requires no upfront payment or long-term commitment. You pay for compute and database capacity by the hour or second, and you can stop or terminate resources at any time without penalty. This aligns perfectly with the temporary, flexible nature of a one-month project.
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.