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Difficulty: MediumCloud Characteristics and Features (Elasticity, On-Demand, Resource Pooling)

A legal research platform maintains a cloud infrastructure supporting nationwide law firms. During major judicial trials, search traffic increases significantly, causing heavy compute demand spikes. The platform's automated rules provision additional virtual compute nodes to handle the workload and release them when query volumes return to normal baseline levels without manual IT intervention. Which essential cloud characteristic does this process demonstrate?

  1. Rapid elasticityAnswer
  2. B
    Resource pooling
  3. C
    On-demand self-service
  4. D
    Measured service

Answer

Rapid elasticity is the cloud characteristic that allows system capacity to expand and contract automatically based on demand.
Rapid elasticity refers to the ability of cloud computing environments to automatically expand (scale out) or contract (scale in) infrastructure capacity in response to changing demand patterns without requiring manual administrative intervention.

Step-by-Step Solution

1
Analyze the workload requirements described in the scenario.
The platform experiences variable demand spikes that trigger automatic provisioning of extra virtual nodes and subsequent release when traffic drops.
Identifying the operational behavior of automatic expansion and contraction isolates the target cloud capability.
2
Compare the scenario behavior against NIST cloud characteristics.
Dynamic allocation and release of compute resources based on real-time load defines rapid elasticity.
Rapid elasticity ensures resources scale dynamically so the organization only uses what is needed during peak times.

Key Concept

Rapid elasticity
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Topics

Cloud Characteristics and Features (Elasticity, On-Demand, Resource Pooling)

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