Cloud Bursting
Key Points
- Moves overflow work to external cloud capacity
- Used in hybrid cloud designs
- Helps absorb demand spikes
- Requires integration and workload portability
- Keeps baseline workload on-premises while directing overflow to cloud resources during demand peaks
Definition
Cloud Bursting is a hybrid cloud strategy that shifts excess workload from a primary environment to an external cloud environment when local capacity is exceeded, using external capacity to absorb temporary spikes without requiring permanent local over-provisioning.
Concept
Cloud Bursting bridges local infrastructure management with cloud capacity extension. It handles temporary demand spikes by maintaining baseline workload on-premises or in a primary environment while directing overflow traffic or jobs to cloud resources during peaks. The strategy depends on workload portability, network connectivity, and the ability to move or replicate execution into cloud resources quickly.
Explainer
Cloud Bursting operates within hybrid cloud architectures, application scaling, batch processing, and capacity management. Key operational constraints include workload compatibility, latency sensitivity, data movement overhead, identity and network integration complexity, and provisioning activation time. Potential failure modes include slow burst response, application incompatibility, transfer bottlenecks, and cost overruns if bursting is overused. Tradeoffs balance flexible capacity against integration complexity, reduced local overprovisioning against increased network dependence, and burst resilience against architectural overhead. Cloud Bursting provides operational value by enabling absorption of temporary demand without peak-load provisioning penalties. Cross-industry relevance extends across cloud computing, enterprise IT, and services with variable demand patterns.