
Ultimate access to all questions.
Deep dive into the quiz with AI chat providers.
We prepare a focused prompt with your quiz and certificate details so each AI can offer a more tailored, in-depth explanation.
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?
A
Spot Instances
B
On-Demand Instances
C
Savings Plans
D
Dedicated Hosts
Explanation:
Savings Plans is the most cost-effective option for this scenario because:
Long-term usage: The application is expected to grow for years, making it ideal for commitment-based pricing models
Uninterruptible requirement: The application cannot tolerate interruptions, which rules out Spot Instances
Cost savings: Savings Plans offer significant discounts (up to 72%) compared to On-Demand pricing for consistent usage
Flexibility: Unlike Reserved Instances, Savings Plans provide flexibility across instance families, sizes, regions, and operating systems
Growing workload: As usage grows, the commitment can be adjusted to maintain optimal savings
Why other options are less suitable:
Spot Instances: Not suitable for uninterruptible applications as they can be terminated with short notice
On-Demand Instances: Most expensive option for long-term, consistent workloads
Dedicated Hosts: More expensive and typically used for compliance requirements, not cost optimization for standard applications
Savings Plans provide the best balance of cost savings and reliability for this long-term, uninterruptible workload.