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SAA-C03 · Question #52

SAA-C03 Question #52: Real Exam Question with Answer & Explanation

The correct answer is D: Purchase Reserved Instances for a 3 year term with the All Upfront option for the Amazon RDS. The company needs to optimize costs for long-running RDS and EC2 workloads.

Submitted by fatema_kw· Mar 4, 2026Design Cost-Optimized Architectures

Question

A company is migrating its databases to Amazon RDS for PostgreSQL. The company is migrating its applications to Amazon EC2 instances. The company wants to optimize costs for long-running workloads. Which solution will meet this requirement MOST cost-effectively?

Options

  • AUse On-Demand Instances for the Amazon RDS for PostgreSQL workloads. Purchase a 1 year
  • BPurchase Reserved Instances for a 1 year term with the No Upfront option for the Amazon RDS
  • CPurchase Reserved Instances for a 1 year term with the Partial Upfront option for the Amazon
  • DPurchase Reserved Instances for a 3 year term with the All Upfront option for the Amazon RDS

Explanation

The company needs to optimize costs for long-running RDS and EC2 workloads.

Common mistakes.

  • A. On-Demand Instances are the most expensive option and do not offer significant cost optimization for long-running workloads.

Concept tested. Reserved Instance pricing models for cost optimization

Reference. https://aws.amazon.com/ec2/pricing/reserved-instances/

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