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Difficulty: MediumReliability, Predictability, and Disaster Recovery

A municipal government is planning to migrate its public transit tracking portal to Microsoft Azure. The portal experiences sudden traffic spikes during rush hours, but the city requires the application's response times to remain consistent for commuters. Additionally, the city operates on a strict annual budget and must be able to accurately forecast and control monthly cloud expenditure. Which cloud concept directly addresses both the performance and cost requirements of the municipal government?

  1. PredictabilityAnswer
  2. B
    High availability
  3. C
    Elasticity
  4. D
    Availability Zones

Answer

Predictability
The correct answer is predictability. Predictability in the cloud has two main pillars: performance predictability and cost predictability. Performance predictability ensures that resources scale appropriately to deliver consistent user experiences (such as stable page loads and API response times during traffic spikes). Cost predictability enables organizations to track, budget, and forecast cloud spending accurately, allowing public sector entities to operate within strict funding guidelines.

Step-by-Step Solution

1
Identify the two core requirements described in the business scenario.
The requirements are: 1) consistent application response times during rush hour traffic spikes (performance consistency), and 2) the ability to forecast and control monthly cloud expenditure within a rigid budget (cost management).
Breaking down the scenario into performance and financial requirements allows for an accurate mapping to cloud benefits.
2
Evaluate the cloud concepts in the options to see which one encompasses both performance and cost management characteristics.
Predictability is defined by two primary aspects: performance predictability (which ensures consistent resource behavior and response times) and cost predictability (which allows organizations to forecast and budget cloud expenditures). Other options, such as elasticity or high availability, only address performance or uptime but do not cover cost forecasting.
Matching the requirements to the definition of cloud concepts determines the correct option.

Key Concept

Predictability
Estimated Time:1m 0s
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Topics

Reliability, Predictability, and Disaster Recovery

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