Which of the following statements regarding billing, cost optimization and cost management in AWS is accurate?

Correct Answer: D.

Savings Plans are flexible discount pricing models that offer reduced rates if the customer commits to one year or three-year consistent usage.

These are confined to Amazon EC2, AWS Fargate, and AWS Lambda usage.

https://docs.aws.amazon.com/savingsplans/latest/userguide/what-is-savings-plans.html

Option A is INCORRECT because the AWS Total Cost of Ownership (TCO) calculator is an estimation tool.

It does not guarantee saving up 80% of the cost of running on-premise infrastructure.

However, the tool allows the customer to estimate and anticipate their total AWS spend according the their use case.

Option B is INCORRECT because in AWS Budgets, utilizing Cost and Usage budgets will give the customer foresight into how much they would like to use and spend on their AWS services.

Utilizing this service will not reduce the overall spend by an exact percentage.

Therefore this statement is inaccurate.

Option C is INCORRECT because the AWS Pricing Calculator does not revise the customer bill.

It allows the customer to derive an estimation of the cost of their AWS resources before the costs are incurred.

Therefore this statement is inaccurate.

When it comes to billing, cost optimization, and cost management in AWS, it is important to understand the various tools and services available to optimize costs and reduce overall spend.

A. The AWS Total Cost of Ownership (TCO) calculator is a tool that helps customers compare the cost of running their applications on-premises versus in the AWS Cloud. However, it cannot guarantee an 80% cost savings. The actual savings will depend on various factors such as the workload, application requirements, and utilization patterns. Therefore, option A is incorrect.

B. AWS Budgets is a service that helps customers to set custom cost and usage budgets that alert them when their spend exceeds their set limit. While utilizing cost and usage budgets can help customers optimize their spend, it cannot guarantee a 79% reduction in overall spend. Therefore, option B is also incorrect.

C. The AWS Pricing Calculator is a service that allows customers to estimate their monthly bill based on their usage and services utilized. It provides the ability to estimate costs for long-term usage plans, such as Reserved Instances, Savings Plans, and Spot Instances. However, it cannot guarantee a 60% reduction in overall spend. The actual savings will depend on various factors such as the usage plan, the term commitment, and the services utilized. Therefore, option C is also incorrect.

D. Savings Plans are a flexible pricing model that offer significant savings on AWS usage. When using Savings Plans, customers can save up to 72% on Amazon EC2, AWS Fargate, and AWS Lambda usage. This is because Savings Plans provide discounted pricing for a commitment to use a specific amount of compute usage (measured in dollars per hour) over a one or three-year term. Therefore, option D is the correct answer.

In conclusion, when it comes to billing, cost optimization, and cost management in AWS, it is important to understand the various tools and services available to optimize costs and reduce overall spend. Utilizing services like AWS Budgets, the AWS Pricing Calculator, and Savings Plans can help customers optimize their spend and reduce costs. However, it is important to note that these services cannot guarantee a specific percentage of savings as the actual savings will depend on various factors.