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Amazon CLF-C02: MOST cost-effective Amazon EC2 pricing model to run image rendering applications workload with acceptable downtime

Table of Contents

Question

A company needs to run a workload for several batch image rendering applications. It is acceptable for the workload to experience downtime.

Which Amazon EC2 pricing model would be MOST cost-effective in this situation?

A. On-Demand Instances
B. Reserved Instances
C. Dedicated Instances
D. Spot Instances

Answer

D. Spot Instances

Explanation

The correct answer is D. Spot Instances.

In a situation where it’s acceptable for the workload to experience downtime and cost-effectiveness is a primary concern, using Amazon EC2 Spot Instances would be the most appropriate choice.

Explanation of the options:

A. On-Demand Instances:
On-Demand Instances provide the highest level of flexibility and no upfront costs, but they are usually the most expensive pricing option. Since the workload can experience downtime and cost-effectiveness is important, using On-Demand Instances may not be the most cost-effective choice.

B. Reserved Instances:
Reserved Instances offer potential cost savings compared to On-Demand Instances by committing to a specific instance type and size over a defined term. However, they might not be the most cost-effective choice if downtime is acceptable, as there could be periods when the reserved instances are underutilized.

C. Dedicated Instances:
Dedicated Instances provide dedicated hardware, which can be useful for compliance or regulatory requirements. However, they come at a premium price and might not be the most cost-effective option for a workload that can tolerate downtime.

D. Spot Instances:
Spot Instances are the most cost-effective option for workloads that can tolerate downtime and have flexible start and end times. Spot Instances allow you to bid on unused EC2 capacity at significantly lower prices than On-Demand or Reserved Instances. However, there’s a risk that your instances could be terminated if the capacity is needed by other customers, so Spot Instances are best suited for fault-tolerant, interruption-tolerant workloads like batch processing or data analysis.

In conclusion, when cost-effectiveness is a primary concern and the workload can tolerate downtime, using Amazon EC2 Spot Instances would be the most cost-effective option, as they provide substantial cost savings compared to other pricing models while meeting the requirements of the scenario.

MOST cost-effective Amazon EC2 pricing model to run image rendering applications workload with acceptable downtime

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