Discover the best Amazon EC2 instance purchase option for temporary and variable workloads that require handling short bursts of work without interruption.
Table of Contents
Question
A company has temporary workload that is also variable. The company needs to use Amazon EC2 instances for the workload. The EC2 instances need to handle short bursts of work that cannot stop before finishing.
Which purchase option will meet these requirements?
A. Spot Instances
B. On-Demand Instances
C. Savings Plan
D. Reserved Instances
Answer
B. On-Demand Instances
Explanation
On-Demand Instances are the most suitable purchase option for the company’s requirements due to the following reasons:
- Temporary and variable workload: On-Demand Instances allow users to pay for compute capacity by the second or hour, with no long-term commitments or upfront payments. This flexibility is ideal for temporary and variable workloads, as the company can easily scale up or down based on their needs without incurring unnecessary costs.
- Short bursts of work: On-Demand Instances can be launched quickly and are well-suited for handling short bursts of work. They provide a reliable and predictable performance, ensuring that the workload can be processed efficiently without interruption.
- No interruption: Unlike Spot Instances, which can be interrupted by AWS when the Spot price exceeds the user’s maximum price or when the supply of Spot Instances decreases, On-Demand Instances are not subject to interruption. This guarantees that the workload can be completed without the risk of premature termination.
The other options are not as suitable for the given scenario:
- Spot Instances (A) are not appropriate because they can be interrupted, which goes against the requirement that the work cannot stop before finishing.
- Savings Plans (C) and Reserved Instances (D) are better suited for predictable, steady-state workloads that run for extended periods. They require a commitment to a specific instance type and amount of compute capacity, which may not align with the temporary and variable nature of the company’s workload.
In summary, On-Demand Instances provide the flexibility, reliability, and uninterrupted compute capacity needed for the company’s temporary and variable workload, making them the best choice among the given options.
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