A cloud administrator needs to select a billing model that avoids large upfront capital expenditures and ensures costs are directly aligned with resource consumption to minimize waste. Which billing model BEST meets these requirements?
Spot instance
Pay-as-you-go
Reserved resources
Dedicated host
The pay-as-you-go model directly ties costs to resource consumption, which avoids large upfront payments and prevents paying for unused capacity. Reserved resources often require an upfront commitment for a discounted rate. A dedicated host provides exclusive access to physical hardware and is a fixed, higher-cost option. Spot instances offer deep discounts on spare capacity but can be terminated with little notice, making them suitable for specific, fault-tolerant workloads rather than a primary model for general cost optimization.
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