You are working in a start-up company, and you need to save the cost of Amazon EC2, AWS Fargate, and AWS Lambda. You are looking for a flexible pricing model. For example, you will be charged at a lower rate if you commit to $10/hour of compute usage. Which AWS service can achieve this requirement?

Answer options:

A.AWS Savings Plan
B.AWS Reserved Instance.
C.AWS Dedicated Host.
D.AWS Spot Instance

Correct Answer – A
Option A is CORRECT: Because Savings Plans is a flexible pricing model that provides low prices in exchange for commitment. For its details, please check the following reference.
Option B is incorrect: Because AWS Reserved Instance is only for EC2 and does not help to reduce the cost of AWS Fargate or AWS Lambda.
Option C is incorrect: Because AWS Dedicated Host provides dedicated hardware, which does not help cut the cost.
Option D is incorrect: Because AWS Spot Instance is only for EC2 and not for AWS Fargate or AWS Lambda.
Reference:
https://docs.aws.amazon.com/savingsplans/latest/userguide/what-is-savings-plans.html