A customer needs per-second billing as an option. Which types of purchase options do they have regarding instance type?

A customer needs per-second billing as an option. Which types of purchase options do they have regarding instance type?

• A. On-Demand Instances and Spot Instances
• B. Reserved Instances only
• C. Dedicated Hosts only
• D. Spot Instances only

Answer: (A)

Per-second billing is an important feature for customers who want precise control over their costs based on actual usage, especially for workloads that are variable or unpredictable. On-Demand Instances allow users to pay for compute capacity by the second, with no long-term commitments. This provides flexibility, as users can start and stop instances as needed, making it ideal for applications with short-term or unpredictable workloads. Spot Instances also offer per-second billing, as they allow users to bid on spare AWS capacity, providing a cost-effective solution for flexible applications that can tolerate interruptions. This combination of On-Demand and Spot Instances ensures customers can benefit from per-second billing based on their specific usage scenarios. The other options do not provide per-second billing. Reserved Instances require a commitment for a one- or three-year term and are primarily billed on an hourly basis, although they can provide lower rates for predictable workloads. Dedicated Hosts are dedicated physical servers to run your instances and follow the same hourly billing structure. Thus, when considering the need for per-second billing, On-Demand Instances and Spot Instances are the appropriate choices.

Per-second billing is an important feature for customers who want precise control over their costs based on actual usage, especially for workloads that are variable or unpredictable.

On-Demand Instances allow users to pay for compute capacity by the second, with no long-term commitments. This provides flexibility, as users can start and stop instances as needed, making it ideal for applications with short-term or unpredictable workloads. Spot Instances also offer per-second billing, as they allow users to bid on spare AWS capacity, providing a cost-effective solution for flexible applications that can tolerate interruptions. This combination of On-Demand and Spot Instances ensures customers can benefit from per-second billing based on their specific usage scenarios.

The other options do not provide per-second billing. Reserved Instances require a commitment for a one- or three-year term and are primarily billed on an hourly basis, although they can provide lower rates for predictable workloads. Dedicated Hosts are dedicated physical servers to run your instances and follow the same hourly billing structure. Thus, when considering the need for per-second billing, On-Demand Instances and Spot Instances are the appropriate choices.