The hybrid architectural model is a combination of private and public clouds. Such combinations may be multiple public clouds used simultaneously or a combination of public and private cloud infrastructure. Organizations tend to favor a hybrid model if sensitive data needs unique management, while the frontend interface can make use of the reach and scale of the cloud. Another use case is maintaining a public cloud agreement to offset conditions where scalability exceeds the corporation's private cloud infrastructure. In this case, the public cloud will be used as a load balancer until the swell of data and usage drops back to the private cloud constraints. This use case is called cloud bursting and refers to the use of clouds as contingent resource provisions.