AWS Certified Cloud Practitioner (CLF-C02)Cloud Technology and ServicesEasy
A small consulting firm needs to run a proof-of-concept web application for two weeks before deciding whether to continue the project. The workload is short-term and the firm does not want to commit to any long-term contract. Which EC2 purchasing option is MOST appropriate?
- AEC2 Savings Plans
- BReserved Instances
- COn-Demand Instances
- DSpot Instances
Show answer & explanationAnswer & explanation
Correct answer: C. On-Demand Instances
On-Demand Instances let customers pay by the second or hour with no long-term commitment, making them ideal for short, unpredictable workloads like a two-week proof of concept.
Why the other options are wrong
- A. Savings Plans also require a 1- or 3-year commitment for discounted rates.
- B. Reserved Instances require a 1- or 3-year commitment, which doesn't fit a short-term test.
- D. Spot Instances can be interrupted, which is risky for a time-limited proof-of-concept demo.
EC2 On-Demand Instances
Pay-as-you-go compute capacity with no upfront payment or long-term commitment, billed per second or hour.
- No contract or commitment required
- Highest per-hour price of standard purchase options
- Best for short-term, unpredictable, or new workloads
Memory trick: On-Demand = pay-as-you-go, no strings attached.