AWS Certified Cloud Practitioner (CLF-C02)Cloud ConceptsMedium
A company reviews its AWS Cost Explorer reports monthly, right-sizes underused EC2 instances, and purchases Savings Plans for predictable workloads to reduce spend without sacrificing capacity. This practice best aligns with which Well-Architected Framework pillar?
- AReliability
- BSecurity
- CSustainability
- DCost Optimization
Show answer & explanationAnswer & explanation
Correct answer: D. Cost Optimization
The Cost Optimization pillar focuses on avoiding unnecessary costs, understanding spending over time, and selecting the right resources and pricing models, exactly as described in this scenario.
Why the other options are wrong
- A. Reliability is about recovering from failures and meeting demand, not cost management.
- B. Security focuses on protecting information and systems, unrelated to cost.
- C. Sustainability focuses on minimizing environmental impact, not primarily cost.
Cost Optimization Pillar
A Well-Architected Framework pillar focused on avoiding unnecessary costs, including right-sizing resources and using appropriate pricing models.
- One of six Well-Architected pillars
- Includes practices like right-sizing and using Reserved/Savings Plans
- Complements, not replaces, other pillars like performance and reliability
Memory trick: Trim the fat, keep the muscle—Cost Optimization.