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Zorluk: OrtaAWS Pricing Models

A retail company is planning to deploy two new workloads on Amazon EC2:

1. An internal administrative application that is active only during standard business hours (8 hours a day, 5 days a week) and must remain highly available during those hours without any interruption.
2. A monthly data-cleansing batch process that runs for 12 hours, is designed to save its progress to a database every 10 minutes, and can be stopped and restarted at any time without data loss.

Which of the following Amazon EC2 pricing models should the company select to achieve the most cost-effective setup for these workloads? (Select TWO.)

  1. On-Demand Instances for the internal administrative applicationCevap
  2. Spot Instances for the monthly data-cleansing batch processCevap
  3. C
    Reserved Instances for the internal administrative application
  4. D
    Spot Instances for the internal administrative application
  5. E
    Dedicated Hosts for the monthly data-cleansing batch process

Cevap

The correct options are On-Demand Instances for the internal administrative application and Spot Instances for the monthly data-cleansing batch process.
The correct choices are On-Demand Instances for the internal administrative application and Spot Instances for the monthly data-cleansing batch process. On-Demand Instances allow the company to run the administrative application during business hours and stop it during off-hours, paying only for the hours used without risking interruption. Spot Instances provide the deepest discount for the monthly batch process since the workload is fault-tolerant and can easily resume from checkpoints if interrupted.

Adım Adım Çözüm

1
Analyze the requirements for the administrative application workload.
The application runs only 40 hours a week (24% utilization), must not be interrupted, and must be highly available during those hours.
This helps determine if commitments (Reserved Instances) or interruptible models (Spot Instances) are suitable.
2
Compare EC2 pricing models for the administrative workload.
On-Demand Instances allow stopping the instance outside business hours to only pay for 40 hours of use, which is more cost-effective than paying 24/7 for a Reserved Instance or Savings Plan, while avoiding the interruption risk of Spot Instances.
Choosing On-Demand matches the requirement of no interruptions while keeping costs low through scheduling.
3
Analyze the requirements for the monthly data-cleansing batch process workload.
The batch process runs for 12 hours once a month, checkpoints every 10 minutes, and is fully tolerant of interruptions.
Fault-tolerant, short-running batch workloads are ideal candidates for high-discount pricing models.
4
Compare EC2 pricing models for the batch process workload.
Spot Instances provide up to 90% savings compared to On-Demand rates and are perfectly suited for this workload since it can handle interruptions by resuming from its 10-minute checkpoints.
Spot Instances maximize savings for flexible, non-time-critical batch jobs.

Anahtar Kavram

Selecting the optimal Amazon EC2 pricing model based on workload characteristics like predictability, tolerance for interruption, and overall utilization.
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AWS Pricing Models

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