Which of the following models will best reduce the cost of running short-term, non-critical workloads?

Reserved Instances offer significant discounts for long-term (1-3 years) commitment to compute capacity, which is not suitable for 'short-term' workloads.

Spot Instances allow users to take advantage of unused cloud provider compute capacity at significantly reduced prices compared to on-demand instances. Since these instances can be interrupted, they are ideal for fault-tolerant, flexible, and non-critical workloads that can tolerate such interruptions, making them highly cost-effective for short-term tasks.

Pay-as-you-go (On-Demand) pricing offers flexibility without commitment but is generally the most expensive pricing model and does not provide cost reduction for non-critical workloads compared to Spot.

Dedicated hosts provide physical servers for exclusive use and are typically the most expensive option, not designed for cost reduction for short-term, non-critical workloads.