What is meant by "cloud bursting" in cloud computing?

Cloud bursting refers to a specific configuration that allows an organization to use external cloud resources for additional capacity during demand spikes. This concept is particularly relevant for businesses that experience variable workloads and need to ensure system performance without overcommitting resources during regular operations. When an internal infrastructure reaches its limits due to increased traffic or user demand, cloud bursting enables the seamless extension of applications into the public cloud, thereby absorbing excess load.

This capability provides flexibility and scalability, allowing organizations to handle temporary increases in demand while managing costs effectively by only utilizing additional resources when necessary. The approach ensures that services remain available and performant while optimizing resource usage during normal operations.

The focus on external cloud resources during these peaks is what distinctly defines cloud bursting as opposed to strategies concentrated solely on security, cost reduction, or migration processes.