CompTIA A+ Core 1 (220-1201)Virtualization and Cloud ComputingMedium
A retailer normally runs its inventory application on a private cloud. During periods of unusually high demand, the application automatically shifts excess workload to a public cloud provider to maintain performance, then shifts the workload back once demand subsides. Which term describes this technique?
- AMultitenancy
- BCloud bursting
- CVM migration
- DResource pooling
Show answer & explanationAnswer & explanation
Correct answer: B. Cloud bursting
Cloud bursting is a hybrid cloud technique in which an application running in a private cloud automatically 'bursts' into a public cloud when demand exceeds private capacity, then returns when demand drops.
Why the other options are wrong
- A. Multitenancy describes multiple customers sharing the same cloud infrastructure, not workload overflow.
- C. VM migration is moving a specific VM between hosts, not a hybrid demand-based overflow strategy.
- D. Resource pooling refers to shared infrastructure among tenants, not overflow between clouds.
Cloud Bursting
A hybrid cloud technique where workload automatically overflows from a private cloud to a public cloud during demand spikes, then returns when demand decreases.
- Requires hybrid cloud architecture
- Maintains performance during traffic spikes
- Reduces need to overprovision private infrastructure
Memory trick: When the private dam overflows, workload bursts into the public cloud river.