CLF-C02 Cloud Concepts Practice Question
A company used to spend $2 million upfront purchasing servers and building a data centre before launching a new product. With AWS, they provision resources as needed and pay monthly based on actual usage. Which cloud benefit does this represent?
⚠ Common exam trap
Many exam-takers confuse the financial benefit of 'trading capital expense for variable expense' with the operational benefit of 'stop guessing about capacity,' as both involve avoiding over-provisioning, but the question specifically focuses on the payment model shift.
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
✓
Trade capital expense for variable expense
This scenario describes shifting from a large upfront capital expenditure (CapEx) on servers and data centers to a variable operational expenditure (OpEx) based on actual usage. AWS's pay-as-you-go model directly enables this trade, allowing the company to align costs with consumption rather than paying for idle capacity. This is the core benefit of trading capital expense for variable expense.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Stop guessing about capacity
Why it's wrong here
Stop guessing about capacity is about leveraging cloud elasticity to scale resources up or down automatically, removing the need to over-provision for peak loads or under-provision for growth. This addresses demand forecasting and utilization efficiency, ensuring you pay only for the capacity you actually consume. However, this is distinct from the capex-to-opex conversion, which is about the structure of IT costs — from large upfront purchases to ongoing usage-based payments.
- ✗
Benefit from economies of scale
Why it's wrong here
Benefit from economies of scale is indeed an AWS advantage, but it addresses unit cost reduction rather than the financial model shift described in the question. AWS passes on savings from its massive aggregate purchasing power, lowering the per-unit price of compute, storage, and bandwidth. This is about price efficiency, not about converting upfront capital investment into a variable, usage-based operating expense. Therefore, it does not describe the capex-to-opex benefit.
- ✓
Trade capital expense for variable expense
Why this is correct
Trading capital expense for variable expense is the correct benefit because cloud computing eliminates the need to purchase and own data-center hardware, servers, and other infrastructure. Instead of making a large upfront capital investment that must be depreciated, customers pay an operating expense based on actual consumption — like a utility bill. This reduces financial risk, improves cash flow, avoids sunk costs in idle capacity, and allows IT budgets to align directly with usage.
- ✗
Increase speed and agility
Why it's wrong here
Increase speed and agility refers to the ability to provision and release IT resources almost instantly with self-service, allowing organizations to experiment more often and launch products in minutes instead of months. While this is a critical cloud advantage, it focuses on time-to-market and development velocity. The financial model of shifting from capital expenditure to variable operating expense is a completely separate benefit, so this option does not match the question.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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