Which offering provides discounted pricing on some AWS services in return for a committed spending agreement?

Savings Plans offer significant discounts (up to 72%) on compute usage (EC2, Fargate, Lambda) and EC2 instance usage in exchange for a commitment to spend a specific amount per hour for a one- or three-year term. This commitment provides predictable pricing and cost reduction for stable workloads. Amazon Detective is a security service, not a pricing model. AWS Pricing Calculator helps estimate costs but doesn't offer discounts itself. Basic Support is a support plan tier and does not provide discounted service pricing.