Discover the most cost-effective Amazon EC2 instance purchasing option for running applications without interruption. Learn about Standard Reserved Instances, Convertible Reserved Instances, On-Demand Instances, and Spot Instances to optimize your AWS costs while ensuring high availability.
Table of Contents
Question
A company needs to run an application on Amazon EC2 instances without interruption.
Which EC2 instance purchasing option will meet this requirement MOST cost-effectively?
A. Standard Reserved Instances
B. Convertible Reserved Instances
C. On-Demand Instances
D. Spot Instances
Answer
The most cost-effective EC2 instance purchasing option for running an application on Amazon EC2 instances without interruption is A. Standard Reserved Instances.
Explanation
Standard Reserved Instances provide a significant discount (up to 72%) compared to On-Demand pricing and are best suited for steady-state workloads that need to run continuously. When you purchase a Standard Reserved Instance, you commit to a specific instance configuration (instance type, region, tenancy, and platform) for a 1-year or 3-year term. This long-term commitment allows AWS to better plan their capacity and, in return, offers you lower prices.
The other options are not as cost-effective or suitable for this use case:
B. Convertible Reserved Instances offer a discount, but it’s typically lower than Standard Reserved Instances. They provide more flexibility by allowing you to change the instance configuration during the term, but this flexibility comes at a higher cost compared to Standard Reserved Instances.
C. On-Demand Instances allow you to pay for compute capacity by the hour without long-term commitments. They provide flexibility but are more expensive than Reserved Instances for continuous workloads.
D. Spot Instances are ideal for fault-tolerant, flexible applications. They offer significant cost savings but can be interrupted by AWS when they need the capacity back, making them unsuitable for applications that require uninterrupted operation.
In summary, Standard Reserved Instances provide the most cost-effective solution for running applications on EC2 instances without interruption due to their significant discount and long-term capacity commitment.
Amazon AWS Certified Cloud Practitioner CLF-C02 certification exam assessment practice question and answer (Q&A) dump including multiple choice questions (MCQ) and objective type questions, with detail explanation and reference available free, helpful to pass the Amazon AWS Certified Cloud Practitioner CLF-C02 exam and earn IAmazon AWS Certified Cloud Practitioner CLF-C02 certification.