Question

Difficulty: MediumConsumption-Based Model (CapEx vs OpEx)

A research laboratory is planning a quarterly data analysis project that requires intensive computing power for only three days per quarter. The laboratory chooses to deploy virtual machines in Microsoft Azure using a consumption-based model instead of purchasing on-premises physical servers.

Which of the following describes a financial implication of this decision?

  1. The laboratory eliminates upfront Capital Expenditure (CapEx) for hardware and instead incurs ongoing Operational Expenditure (OpEx) based only on active virtual machine usage.Answer
  2. B
    The laboratory incurs a Capital Expenditure (CapEx) for the virtual machines, which must be depreciated as physical assets over several years.
  3. C
    The laboratory pays a fixed upfront Operational Expenditure (OpEx) that covers the entire year of potential compute resource availability.
  4. D
    The laboratory eliminates Operational Expenditure (OpEx) entirely by converting all cloud-related infrastructure costs into Capital Expenditure (CapEx).

Answer

The laboratory eliminates upfront Capital Expenditure (CapEx) for hardware and instead incurs ongoing Operational Expenditure (OpEx) based only on active virtual machine usage.
In a consumption-based cloud model, organizations pay only for the resources they actively use, with no upfront physical infrastructure costs. Since the laboratory only runs the genetic sequencing VMs for three days per quarter, they avoid the Capital Expenditure (CapEx) of buying physical servers and instead pay for the VMs as an Operational Expenditure (OpEx) only during the active analysis periods.

Step-by-Step Solution

1
Analyze the laboratory's requirement of running workloads for only three days per quarter.
Purchasing physical servers (CapEx) would result in underutilized resources sitting idle for most of the quarter.
Understanding the baseline vs peak requirements is essential for choosing the correct hosting model.
2
Identify the financial impact of deploying virtual machines in a consumption-based model.
In a consumption-based model, there are no upfront costs, and the laboratory only pays for the resources used. This shifts the expenses from Capital Expenditure (CapEx) to Operational Expenditure (OpEx).
This matches the definition and behavior of the consumption-based billing model in Azure.

Key Concept

Consumption-Based Model (CapEx vs OpEx)
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