What Is Cloud Bursting?

►  Cloud Bursting   is defined as:   When you run out of your computing resources in your internal data center, you “burst” the additional workload to an external cloud on an on-demand basis. The internal computing resource is the “Private Cloud” and the external cloud is typically a “public cloud” for which the organization gets charged on a pay-per-use basis. When your deployment has the ability to do “cloudbursting” or spreading the load to the public cloud, you essentially have a Hybrid Cloud.

source: CloudSecurity Blog

See our contributed article dealing with cloudbursting