- A
On-demand self-service
Why wrong: On-demand self-service allows a consumer to provision computing capabilities automatically without requiring human interaction with the service provider. While Azure does offer self-service provisioning, the scenario focuses on post-usage metering and billing, not the initial provisioning process.
- B
Broad network access
Why wrong: Broad network access means that resources are available over the network and can be accessed by standard client platforms (e.g., mobile phones, laptops). The scenario describes usage monitoring and billing, not network accessibility.
- C
Resource pooling
Why wrong: Resource pooling enables the provider's computing resources to be pooled to serve multiple consumers using a multi-tenant model. The scenario emphasizes metering and billing, not the sharing of physical resources among tenants.
- D
Measured service
Measured service is the correct characteristic. Cloud systems automatically control and optimize resource use by leveraging a metering capability. This allows providers to track usage (compute hours, storage, bandwidth) and bill consumers accordingly, as described in the scenario.
AZ-900 Describe cloud concepts Practice Question
This AZ-900 practice question tests your understanding of describe 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 uses Azure to host a web application. At the end of each month, the finance team receives an invoice that details charges for compute hours, storage consumption, and outbound data transfer. The IT manager explains that this granular billing is possible because Azure continuously monitors resource usage and provides detailed usage data for cost allocation. This capability is a direct example of which essential characteristic of cloud computing as defined by the National Institute of Standards and Technology (NIST)?
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
Measured service
The correct answer is D, Measured service, because the scenario describes Azure's ability to continuously monitor resource usage (compute hours, storage, data transfer) and provide detailed billing data. This aligns with NIST's definition of measured service, where cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g., storage, processing, bandwidth, and active user accounts). The granular invoice is a direct output of this metering and reporting feature.
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 it's wrong here
On-demand self-service allows a consumer to provision computing capabilities automatically without requiring human interaction with the service provider. While Azure does offer self-service provisioning, the scenario focuses on post-usage metering and billing, not the initial provisioning process.
- ✗
Broad network access
Why it's wrong here
Broad network access means that resources are available over the network and can be accessed by standard client platforms (e.g., mobile phones, laptops). The scenario describes usage monitoring and billing, not network accessibility.
- ✗
Resource pooling
Why it's wrong here
Resource pooling enables the provider's computing resources to be pooled to serve multiple consumers using a multi-tenant model. The scenario emphasizes metering and billing, not the sharing of physical resources among tenants.
- ✓
Measured service
Why this is correct
Measured service is the correct characteristic. Cloud systems automatically control and optimize resource use by leveraging a metering capability. This allows providers to track usage (compute hours, storage, bandwidth) and bill consumers accordingly, as described in the scenario.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse 'resource pooling' (Option C) with the idea of shared resources being billed, but the key distinction is that measured service specifically addresses the metering and reporting of usage for billing and optimization, not the multi-tenant sharing aspect.
Trap categories for this question
Scenario analysis trap
On-demand self-service allows a consumer to provision computing capabilities automatically without requiring human interaction with the service provider. While Azure does offer self-service provisioning, the scenario focuses on post-usage metering and billing, not the initial provisioning process.
Detailed technical explanation
How to think about this question
Under the hood, Azure's metering infrastructure uses Azure Monitor and the Azure Resource Manager to collect resource consumption telemetry at intervals (e.g., every hour for VMs, per GB for storage). This data is aggregated into usage records, which are then processed by the Azure billing system to generate invoices with line items for each resource type. In a real-world scenario, a finance team could use Azure Cost Management + Billing APIs to programmatically retrieve this granular data and allocate costs to specific departments or projects, enabling chargeback models.
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.
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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: Measured service — The correct answer is D, Measured service, because the scenario describes Azure's ability to continuously monitor resource usage (compute hours, storage, data transfer) and provide detailed billing data. This aligns with NIST's definition of measured service, where cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g., storage, processing, bandwidth, and active user accounts). The granular invoice is a direct output of this metering and reporting feature.
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.
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
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.
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