Compute Savings Plans: Flexible Discounts Across Instance Families
Which AWS pricing model allows customers to commit to a consistent amount of compute usage (measured in $/hour) for a 1 or 3-year term in exchange for significant discounts, without being locked to specific instance types?
Quick Answer
The answer is Compute Savings Plans. This is the correct choice because it allows you to commit to a consistent amount of compute usage measured in dollars per hour for a 1 or 3-year term, earning significant discounts of up to 66% without locking you into specific instance families, instance types, or even regions. The key technical distinction from Reserved Instances is this flexibility: Compute Savings Plans automatically apply your discount to any eligible EC2, Fargate, or Lambda usage, making it ideal for dynamic or evolving workloads. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of the core difference between commitment models—specifically that Reserved Instances lock you to an instance family, while Compute Savings Plans offer flexibility across instance families. A common trap is choosing Reserved Instances when the question emphasizes “no lock-in to instance type.” For a memory tip, think “Compute = Change” — if the workload might change families or regions, choose Compute Savings Plans.
⚠ Common exam trap
Watch out — candidates often confuse Compute Savings Plans with Reserved Instances, assuming that any long-term commitment must lock you to a specific instance type, but Compute Savings Plans specifically decouple the commitment from instance type details.
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 Plans
Compute Savings Plans offer the flexibility to commit to a consistent amount of compute usage (measured in $/hour) for a 1- or 3-year term, providing significant discounts (up to 66%) without requiring you to lock into specific instance types, families, or regions. This model automatically applies the discount to any EC2 instance, Fargate, or Lambda usage within the committed compute commitment, making it the correct answer.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Standard Reserved Instances
Why it's wrong here
Standard RIs are locked to specific instance types and regions, not flexible across instance families.
- ✗
Spot Instances
Why it's wrong here
Spot Instances do not involve term commitments; they can be interrupted at any time.
- ✓
Compute Savings Plans
Why this is correct
Compute Savings Plans offer flexible discounts across any EC2 instance in exchange for a consistent $/hour commitment.
- ✗
Convertible Reserved Instances
Why it's wrong here
Convertible RIs allow attribute changes but are still locked to EC2 and offer less flexibility than Savings Plans.
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 |
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Same concept, more angles
2 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 containerized application on Amazon ECS using a mix of Amazon EC2 On-Demand instances from different instance families (e.g., M5, C5, R5). The workload is consistent, and the company is willing to commit to a 1-year term to reduce costs. However, the team expects to change instance families within the next 12 months due to new hardware requirements and wants the flexibility to switch instance families without incurring a financial penalty. Which pricing option best meets these requirements?
medium- ✓ A.Compute Savings Plans
- B.EC2 Instance Savings Plans
- C.Convertible Reserved Instances
- D.Standard Reserved Instances
Why A: Compute Savings Plans provide the most flexibility by applying a discounted hourly commitment (e.g., $10/hour) across any EC2 instance family, region, OS, or tenancy, and also cover Fargate and Lambda usage. Since the company expects to change instance families within the 1-year term, Compute Savings Plans allow switching without penalty, unlike instance-specific plans.
Variation 2. A company runs a set of steady-state workloads on Amazon EC2 instances and Amazon ECS Fargate tasks. The company expects consistent usage for the next 3 years and wants to reduce compute costs. The company prefers flexibility to move workloads between different instance families and across different AWS compute services (EC2, ECS, and Lambda) without committing to a specific instance type or family. Which AWS pricing model meets these requirements?
medium- ✓ A.Compute Savings Plans (3-year, partial upfront)
- B.EC2 Instance Savings Plans (3-year, no upfront)
- C.Standard Reserved Instances (1-year, all upfront)
- D.Convertible Reserved Instances (3-year, all upfront)
Why A: Compute Savings Plans (3-year, partial upfront) is correct because it provides the highest flexibility, allowing workloads to move between EC2 instances, ECS Fargate, and Lambda without committing to a specific instance family or compute service. The 3-year term with partial upfront offers a significant discount for steady-state workloads while still enabling the required flexibility across compute services. Compute Savings Plans apply to eligible compute usage in the AWS region where purchased, automatically covering any instance family or size across EC2, Fargate, and Lambda, making it ideal for the described steady-state yet flexible workload.
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.