AZ-900 Describe cloud concepts Practice Question
A company is moving from an on-premises data center to Azure. Instead of paying a large upfront cost for servers, they will pay a monthly subscription fee based on usage. This represents a shift from which type of expenditure to which?
⚠ Common exam trap
A common mix-up: candidates confuse the CapEx-to-OpEx shift with a fixed-to-variable cost change, but Azure's reserved instances and savings plans introduce fixed costs within OpEx, making the expenditure type the primary distinction.
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
✓
Capital expenditure to Operational expenditure
This scenario describes a shift from Capital Expenditure (CapEx) to Operational Expenditure (OpEx). CapEx involves upfront, long-term investments in physical assets like servers, while OpEx is a pay-as-you-go model where costs are incurred based on actual usage. Azure's subscription model eliminates the need for large initial capital outlays, aligning costs with consumption.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Capital expenditure to Operational expenditure
Why this is correct
Moving to Azure shifts spending from capital expenditure (CAPEX) to operational expenditure (OPEX). In an on-premises data center, you must purchase and depreciate physical servers, storage, and networking hardware. Azure's pay-as-you-go, consumption-based pricing means you pay only for resources you use, with no upfront infrastructure purchases; this is a fundamental shift from owning assets to renting services.
- ✗
Operational expenditure to Capital expenditure
Why it's wrong here
This is the reverse of the actual cloud model. When you move to Azure, you do not buy physical assets; instead you consume services and pay per use, which is OPEX. Capital expenditure would apply if you were building a data center and purchasing hardware with a multi-year depreciation schedule. Therefore, selecting this reverses the correct CAPEX-to-OPEX direction.
When this WOULD be correct
This option would be correct in a scenario where a company moves from a pay-as-you-go cloud model to purchasing on-premises hardware with a large upfront cost, representing a shift from OpEx to CapEx.
- ✗
Direct cost to Indirect cost
Why it's wrong here
Direct cost and indirect cost are accounting terms that classify whether a cost can be traced to a specific cost object, such as a product or department. They are unrelated to the financial model of cloud consumption. Azure pricing is based on a pay-per-use operational model, not on how costs are allocated in a general ledger. Thus this is not the relevant distinction for moving from on-premises to the cloud.
When this WOULD be correct
A question asks: 'A company moves from paying for dedicated hardware to paying for shared cloud resources. This represents a shift from which cost type to which?' The correct answer would be 'Direct cost to Indirect cost' because dedicated hardware costs are directly attributable to a specific product/service, while shared cloud resources are indirect costs allocated across multiple services.
- ✗
Fixed cost to Variable cost
Why it's wrong here
While cloud costs can be variable (scaling with usage), the fixed-to-variable distinction is not the primary shift tested in Microsoft's cloud fundamentals. In fact, Azure Reserved Instances allow you to commit to a fixed cost for a term, yet the expense is still classified as OPEX because you own no underlying hardware. The defining change is from capital expenditure (purchasing depreciable assets) to operational expenditure (paying for consumed services), making this description a secondary characteristic rather than the core model.
When this WOULD be correct
This option would be correct in a question that contrasts a consistent monthly fee (e.g., a reserved instance or a fixed subscription plan) with a pay-per-use model. For example: 'A company moves from a flat-rate monthly subscription to a model where costs increase with usage. This represents a shift from fixed cost to variable cost.'
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-900 exam frequently reuses these exact scenarios with slightly different constraints.
✓Capital expenditure to Operational expenditureCorrect answer▾
Why this is correct
Moving to Azure shifts spending from capital expenditure (CAPEX) to operational expenditure (OPEX). In an on-premises data center, you must purchase and depreciate physical servers, storage, and networking hardware. Azure's pay-as-you-go, consumption-based pricing means you pay only for resources you use, with no upfront infrastructure purchases; this is a fundamental shift from owning assets to renting services.
✗Operational expenditure to Capital expenditureWrong answer — click to see why▾
Why this is wrong here
The question describes moving from upfront server costs to a monthly subscription based on usage, which is a shift from capital expenditure (CapEx) to operational expenditure (OpEx), not the reverse.
★ When this WOULD be the correct answer
This option would be correct in a scenario where a company moves from a pay-as-you-go cloud model to purchasing on-premises hardware with a large upfront cost, representing a shift from OpEx to CapEx.
Why candidates choose this
Candidates may confuse the direction of the shift or misunderstand that cloud subscriptions are OpEx, not CapEx, leading them to incorrectly select the reverse order.
✗Direct cost to Indirect costWrong answer — click to see why▾
Why this is wrong here
The question specifically contrasts upfront server costs (CapEx) with a monthly usage-based subscription (OpEx). 'Direct cost to Indirect cost' is irrelevant because both on-premises and Azure costs can be direct or indirect depending on allocation, and the core shift is about capital vs. operational expenditure.
★ When this WOULD be the correct answer
A question asks: 'A company moves from paying for dedicated hardware to paying for shared cloud resources. This represents a shift from which cost type to which?' The correct answer would be 'Direct cost to Indirect cost' because dedicated hardware costs are directly attributable to a specific product/service, while shared cloud resources are indirect costs allocated across multiple services.
Why candidates choose this
Candidates may confuse 'direct vs. indirect' with 'capital vs. operational' because both involve changes in cost structure. They might think that moving from owning servers (direct cost) to paying a subscription (indirect cost) fits, but the exam focuses on the financial classification of expenditure, not cost allocation.
✗Fixed cost to Variable costWrong answer — click to see why▾
Why this is wrong here
The question describes a shift from upfront server costs to a usage-based subscription, which is a change from capital expenditure (CapEx) to operational expenditure (OpEx), not from fixed to variable cost. Fixed vs. variable cost is a different classification that doesn't directly map to the on-premises to cloud transition.
★ When this WOULD be the correct answer
This option would be correct in a question that contrasts a consistent monthly fee (e.g., a reserved instance or a fixed subscription plan) with a pay-per-use model. For example: 'A company moves from a flat-rate monthly subscription to a model where costs increase with usage. This represents a shift from fixed cost to variable cost.'
Why candidates choose this
Candidates may confuse the CapEx-to-OpEx shift with a fixed-to-variable cost shift because both involve moving from a large upfront payment to ongoing usage-based payments. However, fixed vs. variable cost is a different accounting concept that focuses on cost behavior relative to activity levels, not the nature of the expenditure.
Analysis generated from the official AZ-900blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
The Shared Responsibility Model
Key term
CapEx
CapEx (Capital Expenditure) is the money a company spends upfront to buy, build, or improve physical assets like servers, buildings, or equipment, which are then owned and depreciated over time.
Key term
OpEx
Operational Expenditure (OpEx) is the ongoing cost for running a business, like paying for cloud services monthly instead of buying hardware upfront.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.