This information is necessary in order to properly configure your application delivery controller so it can communicate with the global load balancer in a timely fashion and start to redirect traffic before it becomes critical.
Cloudbursting is a new twist on a fairly well-understood architecture. The difference between cloudbursting and traditional global load balancing across multiple data centers is in the use of the cloud and in the savings realized by organizations that take advantage of cloudbursting instead of building their own infrastructure.
Cloudbursting can also be an efficient method of assisting with scaling rapid growth sites at which the rate of traffic growth is outpacing the ability of IT to obtain, prepare and deploy infrastructure. And cloudbursting can also be extended as a disaster recovery plan in order to reduce the costs associated with building out and maintaining a secondary, idle data center.