Question 55 of 1,031

Describe cloud concepts →easyMultiple ChoiceObjective-mapped

AZ-900 Describe cloud concepts Practice Question

This AZ-900 practice question tests your understanding of describe cloud concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.

Which statement best describes the 'economies of scale' advantage of cloud computing for customers?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

Question 1easymultiple choice

Full question →

A
Organizations save money by eliminating all IT staff when using the cloud
Why wrong: Cloud doesn't eliminate IT staff needs; it shifts focus from hardware management to cloud management.
B
Cloud providers achieve lower per-unit costs through massive purchasing power, offering customers lower prices
Economies of scale mean lower per-unit costs from massive purchases, enabling cloud providers to offer lower prices to customers.
C
Organizations can use cloud resources without paying anything
Why wrong: Cloud resources cost money; economies of scale make them cheaper than building your own, not free.
D
Organizations pay less because cloud resources are lower quality than enterprise hardware
Why wrong: Cloud providers use enterprise-grade hardware; costs are lower due to scale, not quality reduction.

Full breakdown with real-world context →

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

✓

Cloud providers achieve lower per-unit costs through massive purchasing power, offering customers lower prices

Economies of scale in cloud computing means that cloud providers like AWS, Azure, or Google Cloud operate at a massive scale, allowing them to negotiate bulk discounts on hardware, power, and cooling. These cost savings are passed down to customers in the form of lower pay-as-you-go prices, making it cheaper for individual organizations than running their own on-premises data centers.

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.

✗
Organizations save money by eliminating all IT staff when using the cloud
Why it's wrong here
Cloud doesn't eliminate IT staff needs; it shifts focus from hardware management to cloud management.
✓
Cloud providers achieve lower per-unit costs through massive purchasing power, offering customers lower prices
Why this is correct
Economies of scale mean lower per-unit costs from massive purchases, enabling cloud providers to offer lower prices to customers.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Organizations can use cloud resources without paying anything
Why it's wrong here
Cloud resources cost money; economies of scale make them cheaper than building your own, not free.
✗
Organizations pay less because cloud resources are lower quality than enterprise hardware
Why it's wrong here
Cloud providers use enterprise-grade hardware; costs are lower due to scale, not quality reduction.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is confusing 'economies of scale' with 'free resources' or 'eliminating staff,' when the core concept is about cost reduction through provider-level efficiency and bulk purchasing power.

Detailed technical explanation

How to think about this question

Under the hood, economies of scale are realized through hyperscale data centers that achieve power usage effectiveness (PUE) as low as 1.1, compared to 1.8 for typical enterprise data centers. Providers also leverage custom hardware like AWS Nitro or Azure SmartNICs to offload virtualization overhead, reducing per-unit costs further. Real-world example: a single organization buying 100 servers pays a premium, but Azure buying 100,000 servers gets a 30-50% discount, which is reflected in lower VM pricing tiers.

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.

Related AZ-900 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Describe cloud concepts practice questions

Practise AZ-900 questions linked to Describe cloud concepts.

Describe Azure architecture and services practice questions

Practise AZ-900 questions linked to Describe Azure architecture and services.

Describe Azure management and governance practice questions

Practise AZ-900 questions linked to Describe Azure management and governance.

AZ-900 Azure services practice questions

Practise AZ-900 questions linked to AZ-900 Azure services.

AZ-900 pricing and support practice questions

Practise AZ-900 questions linked to AZ-900 pricing and support.

AZ-900 security and compliance practice questions

Practise AZ-900 questions linked to AZ-900 security and compliance.

AZ-900 governance practice questions

Practise AZ-900 questions linked to AZ-900 governance.

Practice this exam

Start a free AZ-900 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

AZ-900 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this AZ-900 question test?

Describe cloud concepts — This question tests Describe cloud concepts — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Cloud providers achieve lower per-unit costs through massive purchasing power, offering customers lower prices — Economies of scale in cloud computing means that cloud providers like AWS, Azure, or Google Cloud operate at a massive scale, allowing them to negotiate bulk discounts on hardware, power, and cooling. These cost savings are passed down to customers in the form of lower pay-as-you-go prices, making it cheaper for individual organizations than running their own on-premises data centers.

What should I do if I get this AZ-900 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

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 →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This AZ-900 practice question is part of Courseiva's free Microsoft 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 AZ-900 exam.