- A
Cost Optimization
Why wrong: Cost Optimization is one of the original five pillars — it's about financial efficiency, not environmental impact (though they often overlap).
- B
Sustainability
Sustainability was added as the sixth pillar in 2021, focused on minimizing environmental impacts through higher utilization, managed services, right-sizing, and selecting lower-carbon Regions.
- C
Governance
Why wrong: Governance is not one of the six Well-Architected Framework pillars — the six are Operational Excellence, Security, Reliability, Performance Efficiency, Cost Optimization, and Sustainability.
- D
Resilience
Why wrong: Resilience concepts are covered under the Reliability pillar — it is not a separate sixth pillar.
Question 505 of 1,024
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to understand the AWS Well-Architected Framework's sixth pillar added in 2021. Which pillar focuses on minimizing the environmental impact of cloud workloads?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Sustainability
The AWS Well-Architected Framework added a sixth pillar, Sustainability, in 2021. This pillar provides design principles and best practices to minimize the environmental impact of cloud workloads, such as optimizing utilization, reducing energy consumption, and selecting efficient hardware and regions.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cost Optimization
Why it's wrong here
Cost Optimization is one of the original five pillars — it's about financial efficiency, not environmental impact (though they often overlap).
- ✓
Sustainability
Why this is correct
Sustainability was added as the sixth pillar in 2021, focused on minimizing environmental impacts through higher utilization, managed services, right-sizing, and selecting lower-carbon Regions.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Governance
Why it's wrong here
Governance is not one of the six Well-Architected Framework pillars — the six are Operational Excellence, Security, Reliability, Performance Efficiency, Cost Optimization, and Sustainability.
- ✗
Resilience
Why it's wrong here
Resilience concepts are covered under the Reliability pillar — it is not a separate sixth pillar.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the Sustainability pillar with Cost Optimization, assuming reducing costs automatically reduces environmental impact, but the Sustainability pillar specifically targets carbon footprint and energy efficiency, not just financial savings.
Detailed technical explanation
How to think about this question
The Sustainability pillar encourages practices like right-sizing instances, using managed services (e.g., AWS Lambda) to reduce idle resources, and selecting regions powered by renewable energy. Under the hood, AWS measures carbon footprint via the Customer Carbon Footprint Tool, which tracks Scope 1, 2, and 3 emissions. A real-world scenario is a company migrating from on-premises to AWS and using the Sustainability pillar to choose Graviton-based EC2 instances, which offer up to 60% lower energy consumption for the same performance.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Cloud Concepts — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Concepts — This question tests Cloud Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Sustainability — The AWS Well-Architected Framework added a sixth pillar, Sustainability, in 2021. This pillar provides design principles and best practices to minimize the environmental impact of cloud workloads, such as optimizing utilization, reducing energy consumption, and selecting efficient hardware and regions.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
This CLF-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CLF-C02 exam.
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