CLF-C02 Billing, Pricing, and Support Practice Question
A company runs a mix of Amazon EC2 instances, AWS Fargate containers, and AWS Lambda functions across multiple AWS Regions. The company wants to reduce costs by making a 1-year commitment for compute usage. The company needs a flexible purchasing option that automatically applies the discounted rate to any EC2 instance, Fargate, or Lambda usage, regardless of region, instance family, or size. Which AWS purchasing option should the company use?
⚠ Common exam trap
Candidates often confuse Savings Plans with Reserved Instances, assuming Reserved Instances offer similar flexibility, but Reserved Instances are tied to specific instance attributes and do not cover Fargate or Lambda, making them unsuitable for this multi-service, multi-Region scenario.
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
✓
Compute Savings Plan
A Compute Savings Plan is the correct choice because it offers the most flexibility, automatically applying discounted rates to any EC2 instance, Fargate, or Lambda usage across any AWS Region, instance family, or size. This matches the company's requirement for a 1-year commitment that covers diverse compute services without regional or instance constraints.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Compute Savings Plan
Why this is correct
A Compute Savings Plan applies to any EC2 instance (any family, size, region), as well as to AWS Fargate and AWS Lambda usage. It provides the highest flexibility and matches the requirement of covering all compute services across regions.
- ✗
EC2 Instance Savings Plan
Why it's wrong here
An EC2 Instance Savings Plan applies only to a specific instance family within a single region (e.g., m5 in us-east-1). It does not automatically scale across all instance types, regions, or other compute services like Fargate or Lambda.
When this WOULD be correct
A company runs only EC2 instances in a single region and wants to commit to a specific instance family (e.g., m5.large) for 1 year to maximize discounts, with no need for Fargate or Lambda coverage.
- ✗
Standard Reserved Instance
Why it's wrong here
Standard Reserved Instances offer a discount for a specific EC2 instance type in a specific region and Availability Zone. They do not cover other instance types or compute services such as Fargate or Lambda, and they require upfront specification of attributes.
When this WOULD be correct
A company runs only EC2 instances in a single region, knows the instance family and size it will use for a 1-year term, and wants the highest discount possible without needing flexibility. Standard Reserved Instances would be the correct choice.
- ✗
Convertible Reserved Instance
Why it's wrong here
Convertible Reserved Instances allow some flexibility to change instance attributes, but they still apply only to EC2 instances, not to Fargate or Lambda. Additionally, exchanges require a like‑kind exchange process and are limited to EC2.
When this WOULD be correct
A company runs only EC2 instances and needs the flexibility to change instance families or modify attributes (e.g., from Linux to Windows) during a 1-year commitment, while still receiving a discounted rate.
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.
✓Compute Savings PlanCorrect answer▾
Why this is correct
A Compute Savings Plan applies to any EC2 instance (any family, size, region), as well as to AWS Fargate and AWS Lambda usage. It provides the highest flexibility and matches the requirement of covering all compute services across regions.
✗EC2 Instance Savings PlanWrong answer — click to see why▾
Why this is wrong here
EC2 Instance Savings Plan applies only to EC2 instance usage, not to Fargate or Lambda, and is limited to a specific instance family within a region, failing to meet the requirement for flexible compute across all services and regions.
★ When this WOULD be the correct answer
A company runs only EC2 instances in a single region and wants to commit to a specific instance family (e.g., m5.large) for 1 year to maximize discounts, with no need for Fargate or Lambda coverage.
Why candidates choose this
Candidates may confuse Savings Plans with Reserved Instances and assume 'Instance' refers to any compute, overlooking that EC2 Instance Savings Plan is more restrictive than Compute Savings Plan.
✗Standard Reserved InstanceWrong answer — click to see why▾
Why this is wrong here
Standard Reserved Instances require a commitment to a specific instance family and region, and they do not cover AWS Fargate or Lambda usage. The question requires a flexible option that applies to any EC2, Fargate, or Lambda usage across regions.
★ When this WOULD be the correct answer
A company runs only EC2 instances in a single region, knows the instance family and size it will use for a 1-year term, and wants the highest discount possible without needing flexibility. Standard Reserved Instances would be the correct choice.
Why candidates choose this
Candidates may confuse Reserved Instances with Savings Plans, thinking that any 'reserved' option provides broad coverage, or they may not realize that Standard Reserved Instances are inflexible and do not cover Fargate or Lambda.
✗Convertible Reserved InstanceWrong answer — click to see why▾
Why this is wrong here
Convertible Reserved Instances apply only to EC2 instances, not to Fargate or Lambda usage, and they are region-specific, not flexible across multiple Regions.
★ When this WOULD be the correct answer
A company runs only EC2 instances and needs the flexibility to change instance families or modify attributes (e.g., from Linux to Windows) during a 1-year commitment, while still receiving a discounted rate.
Why candidates choose this
Candidates may confuse 'convertible' with 'flexible', assuming it covers multiple compute services, but Convertible RIs only apply to EC2 and lack the cross-service and cross-region flexibility of Savings Plans.
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?”
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
Go deeper
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Same concept, more angles
5 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 runs a set of Amazon EC2 instances that handle a consistent, predictable workload 24 hours a day, 7 days a week. The company expects to continue running this workload for the next three years. The finance team wants to minimize the total cost of these EC2 instances while maintaining flexibility to change instance families if needed. Which AWS pricing option should the company choose to meet these requirements?
medium- A.On-Demand instances
- B.EC2 Instance Savings Plans (1-year, no upfront)
- ✓ C.Compute Savings Plans (3-year, all upfront)
- D.Spot Instances
Why C: Compute Savings Plans (3-year, all upfront) provide the highest discount (up to 66%) for consistent, predictable workloads running 24/7 for three years, and they offer flexibility to change instance families, operating systems, or regions within the compute scope. This matches the requirement to minimize cost while maintaining the ability to switch instance families.
Variation 2. A company runs a mix of Amazon EC2 instances and AWS Fargate containers. The CFO wants to reduce costs by committing to a consistent amount of compute usage (measured in $ per hour) for a 1-year term. The company expects to change instance families and regions occasionally and needs the flexibility to apply the savings to both EC2 and ECS Fargate usage. Which AWS pricing option should the company choose?
medium- ✓ A.Compute Savings Plans
- B.EC2 Instance Savings Plans
- C.Reserved Instances (Convertible)
- D.On-Demand Instances
Why A: Compute Savings Plans offer the flexibility to cover EC2 instance and Fargate usage across any region, instance family, or compute type, while providing a discounted hourly rate in exchange for a 1-year commitment. This matches the CFO's requirement to reduce costs with a consistent $/hour commitment and the need to change instance families and regions occasionally, as Compute Savings Plans automatically apply to any eligible compute usage without requiring specific reservations.
Variation 3. A company plans to run a fleet of Amazon EC2 instances continuously for 3 years to support a steady-state application. The company wants the lowest possible cost for this predictable workload while maintaining the flexibility to change instance families if needed. Which AWS purchasing option should the company choose?
medium- A.On-Demand Instances
- B.Standard Reserved Instances
- ✓ C.Compute Savings Plans
- D.Spot Instances
Why C: Compute Savings Plans offer the lowest cost for a predictable, steady-state workload over 3 years while allowing flexibility to change instance families. Unlike Reserved Instances, which lock you to a specific instance family, Compute Savings Plans apply to any EC2 instance (including those in different families) within a chosen region, automatically providing the highest discount (up to 66% vs On-Demand) for consistent compute usage.
Variation 4. A company runs a mix of Amazon EC2 instances (different instance families) and AWS Fargate tasks across multiple AWS Regions. The cloud operations team wants to reduce costs while retaining maximum flexibility to change instance families, operating systems, and compute platforms (EC2 or Fargate) without losing the discount. They are willing to commit to a consistent amount of compute usage (measured in $/hour) for a 1-year term. Which AWS pricing model should they choose?
medium- A.EC2 Instance Savings Plans
- ✓ B.Compute Savings Plans
- C.Reserved Instances (Standard)
- D.Dedicated Hosts
Why B: Compute Savings Plans provide the most flexibility, applying to any EC2 instance family, any operating system, and any compute platform (including Fargate) across any region, as long as the hourly spend commitment is met. This matches the team's requirement to retain maximum flexibility to change instance families, OS, and compute platforms without losing the discount, for a 1-year term.
Variation 5. A company runs a diverse workload on AWS that includes Amazon EC2 instances of various families and sizes across multiple regions, Amazon RDS databases, and a serverless application using AWS Lambda and AWS Fargate. The finance team wants to reduce compute costs by making a 1-year hourly spend commitment, but they need the flexibility to change instance families, sizes, regions, or switch between EC2, Fargate, and Lambda without losing the discount. Which AWS pricing model should the finance team choose to meet these requirements?
medium- ✓ A.Compute Savings Plan
- B.Reserved Instances (Standard)
- C.Reserved Instances (Convertible)
- D.On-Demand
Why A: A Compute Savings Plan is the correct choice because it offers a 1-year hourly spend commitment with the flexibility to change instance families, sizes, regions, and even switch between EC2, Fargate, and Lambda while still receiving the discount. This plan applies to any compute usage across these services, automatically adjusting the discount to the most cost-effective instance type or compute option, meeting the finance team's need for both cost reduction and operational flexibility.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.