Cloud bursting is an application deployment model
in which an application runs on a private cloud or datacenter and bursts
to a public cloud when the demand for computing capacity spikes. A
burst is a specific amount of data sent or received in one intermittent
operation when a threshold is reached. The advantage of such a hybrid
cloud deployment is that an organization only pays for extra compute
resources only when they are needed.
The Business Impact of Cloud Bursting
the former CTO of X.commerce at eBay
gave an interesting talk
last year on the economic benefit of Cloud Bursting. Neal pointed out
eBay traffic statistics and showed some real numbers of the business
impact of bursting peak load activities using on-demand cloud resources
as presented in the diagram below.
The diagram shows real traffic statistics on eBay site (the brown lines).
The line at the top shows the associated costs for provisioning all the
resources for peak loads. The blue lines show what the cost could be if
they’d provision for the average load and use on-demand resources for
the peak loads. Based on this case study, cloud bursting can yield a 40%
reduction in overall costs.