A company has an uninterruptible application that runs on Amazon EC2 instances.The application constantly processes a backlog of files in an Amazon Simple Queue Service (Amazon SQS) queue.This usage is expected to continue to grow for years.
What is the MOST cost-effective EC2 instance purchasing model to meet these requirements?
Spot Instances
On-Demand Instances
Savings Plans
Dedicated Hosts
Explanations:
Spot Instances are cost-effective but are not suitable for uninterruptible applications, as they can be interrupted by AWS with little notice.
On-Demand Instances are flexible but are not the most cost-effective choice for long-term, constantly running workloads.
Savings Plans offer a cost-effective way to run EC2 instances for long-term, uninterrupted workloads, with discounts for committing to a usage plan.
Dedicated Hosts are generally used for regulatory or licensing requirements and are more costly, not the best fit for a cost-effective, continuously running app.