Question 25
Domain 2: Design for New SolutionsA solutions architect is selecting a pricing model to reduce ongoing AWS costs for a workload with predictable long-term usage. Based on the pricing models identified in the exam guide, which option is an AWS pricing model intended for this purpose?
Correct answer: B
Explanation
For predictable long-term AWS usage, cost optimization commonly involves commitment-based pricing models rather than only pay-as-you-go consumption. — AWS-Certified-Solutions-Architect-Professional_Exam-Guide.txt
Why each option is right or wrong
A. AWS Organizations
AWS Organizations is an account management service, not a pricing model for usage commitments.
B. Reserved Instances
The source material lists Reserved Instances under pricing models, alongside Savings Plans. In a scenario focused on reducing cost for predictable long-term usage, Reserved Instances matches the identified AWS pricing model category.
C. Amazon CloudWatch
Amazon CloudWatch is a monitoring service, not a pricing model used for commitment-based cost optimization.
D. AWS Well-Architected Framework
The AWS Well-Architected Framework is design guidance, not a purchasable pricing model.