A company has multiple AWS accounts running compute workloads that must not be interrupted. The company wants to receive billing discounts based on total AWS usage. Which AWS feature or purchasing option will provide those discounts?

Consolidated billing, a feature of AWS Organizations, allows you to combine the billing for multiple AWS accounts into a single bill. This aggregates your usage across all linked accounts, making you eligible for volume discounts (tiering discounts) and Reserved Instance/Savings Plan sharing, which can significantly reduce overall costs. Resource tagging is used for cost allocation and management, not for direct discounts. Pay-as-you-go pricing is the default billing model but doesn't inherently provide discounts for aggregated usage. Spot Instances offer significant discounts but are for fault-tolerant workloads that can tolerate interruptions, which contradicts the requirement for workloads that "must not be interrupted.