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Difficulty: MediumReliability, Predictability, and Disaster Recovery

A food delivery service experiences massive spikes in user traffic daily between 6:00 PM and 8:00 PM. The company needs to maintain consistent page load times for its customers during these hours while ensuring they can forecast their infrastructure costs accurately each month. Which cloud benefit addresses the need for both stable performance under load and foreseeable monthly expenditures?

  1. A
    Elasticity
  2. B
    High availability
  3. PredictabilityAnswer
  4. D
    Geographic distribution

Answer

Predictability
Predictability is the cloud benefit that ensures applications perform consistently under load while allowing organizations to accurately forecast and manage their monthly infrastructure expenditures.

Step-by-Step Solution

1
Analyze the business scenario requirements for consistent performance during traffic surges and foreseeable monthly infrastructure costs.
The target requirements map to two distinct cloud objectives: performance consistency and budget forecasting.
This allows us to identify the core cloud concept that addresses both operational and financial consistency.
2
Evaluate the standard Azure cloud benefits to see which concept covers both performance consistency and cost forecasting.
Predictability is defined by two key dimensions: performance predictability (e.g., consistent response times through auto-scaling) and cost predictability (e.g., predictable billing through cost management tools).
This isolates the correct answer from other concepts like elasticity, which focus solely on scaling resources up and down.

Key Concept

Predictability in the cloud refers to both performance predictability (maintaining uniform latency and resource availability) and cost predictability (allowing companies to forecast, monitor, and cap their billing).
Estimated Time:1m 0s
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Topics

Reliability, Predictability, and Disaster Recovery

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