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CLF-C02 Practice Question 10: Savings Plans

AWS Certified Cloud Practitioner (CLF-C02) · Test 1 · question 10 of 10

Billing, Pricing & Supporthard

A workload has a steady 24/7 compute baseline and the company is willing to commit to three years of usage to lower its bill. Over that period the team expects to change EC2 instance families, move some components to AWS Fargate and AWS Lambda, and possibly shift the workload to a different AWS Region. Which purchasing option gives the discount while tolerating all of those changes?

Select one answer
Show answer and explanation

Answer:

  • B. Compute Savings Plans

Compute Savings Plans commit you to an hourly dollar amount of compute usage for a one- or three-year term and apply that discount to EC2 usage regardless of instance family, instance size, operating system, tenancy, or AWS Region, and to AWS Fargate and AWS Lambda usage as well. That is the only option that survives every change listed in the stem.

Option A, EC2 Instance Savings Plans, offers a comparable discount but locks the commitment to a specific instance family in a specific Region, and does not cover Fargate or Lambda. Option C, Standard Reserved Instances, is likewise tied to an instance family and Region and covers only EC2; Standard RIs also cannot be exchanged for a different instance family the way Convertible RIs can. Option D, Spot Instances, can be up to 90% cheaper but capacity can be reclaimed with a two-minute notice, which is unsuitable for a workload that must run continuously, and it involves no commitment or guaranteed discount.

Reference: What are Savings Plans?

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