Which AWS pricing model or offering will meet these requirements?

Explanations:

Pay-as-you-go pricing allows customers to pay for the services they use without any long-term commitment. It does not provide cost savings for committing to a specific usage level over a year or three years.

Savings Plans offer significant cost savings in exchange for a commitment to use a specific amount of AWS services for one or three years. This model is designed for businesses that can predict their AWS usage and want to reduce costs through long-term commitments.

The AWS Free Tier provides limited access to AWS services for free for a limited period (12 months for new accounts) but does not involve any commitment to use a certain amount of services over a longer term. It is not designed for cost savings through commitments.

Volume discounts apply when usage exceeds certain thresholds but do not require a commitment to a specific amount of service usage over time. They typically reward higher usage rather than offering cost savings for long-term commitments.