Question 922 of 1,031

Describe cloud concepts →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is on-demand self-service, because this scenario perfectly captures the NIST definition where a user can provision computing resources—like virtual machines, storage accounts, and databases—through a web-based portal without requiring human interaction with the cloud provider’s staff. The key technical concept is that resources become available immediately after configuration, eliminating the need for formal requests or manual administrator allocation, which is the hallmark of on-demand self-service in cloud computing. On the Microsoft Azure Fundamentals AZ-900 exam, this characteristic often appears in scenario-based questions contrasting it with measured service or rapid elasticity; a common trap is confusing it with resource pooling, but remember that self-service is about *who* initiates the provisioning (the user, not IT). For a memory tip, think of the “self” in self-service: you serve yourself from the cloud buffet, no waiter needed.

AZ-900 Describe cloud concepts Practice Question

This AZ-900 practice question tests your understanding of describe cloud concepts. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 small business wants to migrate its IT infrastructure to Azure. The owner wants the ability to provision new virtual machines, storage accounts, and databases entirely through a web-based portal, without needing to submit a formal request or wait for an administrator to manually allocate resources. The owner expects resources to be available immediately after configuration. Which characteristic of cloud computing does this scenario best illustrate?

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.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.

Question 1mediummultiple choice

Full question →

A
On-demand self-service
Correct. On-demand self-service means a consumer can provision computing capabilities (e.g., virtual machines, storage) as needed automatically without requiring human interaction with each service provider. The scenario where the owner uses the Azure portal to create resources without contacting Microsoft directly perfectly matches this characteristic.
B
Broad network access
Why wrong: Incorrect. Broad network access means resources are available over the network and accessed through standard mechanisms (e.g., web browsers, REST APIs). While the Azure portal is accessed via a network, the key point in the scenario is the lack of human interaction during provisioning, not the method of access.
C
Resource pooling
Why wrong: Incorrect. Resource pooling means the provider's computing resources are pooled to serve multiple consumers using a multi-tenant model, with physical and virtual resources dynamically assigned and reassigned. The scenario does not address how resources are shared among customers; it focuses on the immediate, self-service provisioning capability.
D
Rapid elasticity
Why wrong: Incorrect. Rapid elasticity refers to the ability to quickly scale resources up or out in response to demand, and then scale back down. The scenario describes provisioning a new resource (creating a VM), not dynamically scaling existing resources based on load. The emphasis is on the self-service aspect, not elasticity.

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

✓

On-demand self-service

This scenario best illustrates on-demand self-service because the owner can provision virtual machines, storage accounts, and databases through a web-based portal (such as the Azure portal) without requiring human interaction with the cloud provider's administrators. The key characteristic is that resources are available immediately after configuration, eliminating the need for formal requests or manual allocation, which is the essence of on-demand self-service as defined by NIST SP 800-145.

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.

✓
On-demand self-service
Why this is correct
Correct. On-demand self-service means a consumer can provision computing capabilities (e.g., virtual machines, storage) as needed automatically without requiring human interaction with each service provider. The scenario where the owner uses the Azure portal to create resources without contacting Microsoft directly perfectly matches this characteristic.
Clue confirmation
The clue words "best", "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Broad network access
Why it's wrong here
Incorrect. Broad network access means resources are available over the network and accessed through standard mechanisms (e.g., web browsers, REST APIs). While the Azure portal is accessed via a network, the key point in the scenario is the lack of human interaction during provisioning, not the method of access.
✗
Resource pooling
Why it's wrong here
Incorrect. Resource pooling means the provider's computing resources are pooled to serve multiple consumers using a multi-tenant model, with physical and virtual resources dynamically assigned and reassigned. The scenario does not address how resources are shared among customers; it focuses on the immediate, self-service provisioning capability.
✗
Rapid elasticity
Why it's wrong here
Incorrect. Rapid elasticity refers to the ability to quickly scale resources up or out in response to demand, and then scale back down. The scenario describes provisioning a new resource (creating a VM), not dynamically scaling existing resources based on load. The emphasis is on the self-service aspect, not elasticity.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse 'rapid elasticity' with 'on-demand self-service' because both involve speed, but elasticity is about automatic scaling based on load, whereas self-service is about user-initiated provisioning without human intervention.

Trap categories for this question

Scenario analysis trap
Incorrect. Broad network access means resources are available over the network and accessed through standard mechanisms (e.g., web browsers, REST APIs). While the Azure portal is accessed via a network, the key point in the scenario is the lack of human interaction during provisioning, not the method of access.

Detailed technical explanation

How to think about this question

Under the hood, on-demand self-service is enabled by Azure Resource Manager (ARM) and the Azure portal's RESTful APIs, which allow users to define resource configurations via JSON templates or interactive forms. When a user provisions a VM, the portal sends an HTTP PUT request to the ARM endpoint, which orchestrates the deployment across compute, storage, and networking layers without any manual approval workflow. A subtle behavior is that while resources appear 'immediately available,' there is often a brief provisioning delay (seconds to minutes) for underlying infrastructure allocation, but this is transparent to the user.

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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

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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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: On-demand self-service — This scenario best illustrates on-demand self-service because the owner can provision virtual machines, storage accounts, and databases through a web-based portal (such as the Azure portal) without requiring human interaction with the cloud provider's administrators. The key characteristic is that resources are available immediately after configuration, eliminating the need for formal requests or manual allocation, which is the essence of on-demand self-service as defined by NIST SP 800-145.

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", "immediately / without restart". 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.

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Last reviewed: Jun 11, 2026

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