The answer is that EC2 Instance Savings Plans offer the highest discount when the workload uses a consistent instance family within a single Region. This is because the plan requires a stricter commitment—locking in both the instance family (like m5 or c5) and the Region—which allows AWS to optimize its capacity planning and pass on deeper savings, up to 72% compared to On-Demand pricing. In contrast, Compute Savings Plans provide more flexibility across instance families and Regions but cap discounts at around 66%. On the AWS Certified Cloud Practitioner CLF-C02 exam, this distinction tests your understanding of the trade-off between flexibility and cost optimization; a common trap is assuming Compute Savings Plans always offer the highest savings due to their broader scope. To remember, think of it as “specificity saves more”—the more you commit to a fixed configuration, the higher the discount.
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 evaluating whether to use AWS Compute Savings Plans or EC2 Instance Savings Plans. Which statement correctly describes when EC2 Instance Savings Plans provide the highest discount?
Why wrong: EC2 Instance Savings Plans are region-specific — for multi-region workloads, Compute Savings Plans provide broader coverage.
B
When the workload uses a consistent instance family within a single Region
EC2 Instance Savings Plans provide the deepest discounts when committed to a specific instance family in a single region, trading flexibility for lower cost.
C
When the workload uses multiple instance families
Why wrong: Multi-instance-family workloads benefit more from the flexibility of Compute Savings Plans.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
When the workload uses a consistent instance family within a single Region
EC2 Instance Savings Plans offer the highest discount (up to 72% compared to On-Demand) because they require a commitment to a specific instance family within a single AWS Region. This allows AWS to optimize capacity planning and pass greater savings to the customer, whereas Compute Savings Plans are more flexible but provide lower discounts (up to 66%).
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.
✗
When the workload spans multiple AWS Regions
Why it's wrong here
EC2 Instance Savings Plans are region-specific — for multi-region workloads, Compute Savings Plans provide broader coverage.
✓
When the workload uses a consistent instance family within a single Region
Why this is correct
EC2 Instance Savings Plans provide the deepest discounts when committed to a specific instance family in a single region, trading flexibility for lower cost.
Related concept
Read the scenario before looking for a memorised answer.
✗
When the workload uses multiple instance families
Why it's wrong here
Multi-instance-family workloads benefit more from the flexibility of Compute Savings Plans.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume 'highest discount' always means 'most flexible,' but EC2 Instance Savings Plans trade flexibility for deeper savings, so the correct answer requires recognizing that commitment to a single instance family and Region yields the maximum discount.
Detailed technical explanation
How to think about this question
Under the hood, EC2 Instance Savings Plans apply a discounted hourly rate to all instances in the specified family (e.g., m5.large) within a Region, regardless of size or tenancy, as long as the instance family matches. A subtle behavior is that if you change instance families (e.g., from m5 to c5), the discount no longer applies and you pay On-Demand rates for the new family, making this plan ideal for stable, predictable workloads. In a real-world scenario, a company running a fixed fleet of r5 instances for memory-intensive databases would maximize savings with EC2 Instance Savings Plans, while a microservices architecture using mixed families would benefit more from Compute Savings Plans.
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: When the workload uses a consistent instance family within a single Region — EC2 Instance Savings Plans offer the highest discount (up to 72% compared to On-Demand) because they require a commitment to a specific instance family within a single AWS Region. This allows AWS to optimize capacity planning and pass greater savings to the customer, whereas Compute Savings Plans are more flexible but provide lower discounts (up to 66%).
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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Question Discussion
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