Section: New Results

Cloud Provisioning for Elastic BPM

Participants : François Charoy, Samir Youcef, Guillaume Rosinosky.

Cloud computing provider do not help consumer to use optimally the available resources. For this, several approaches have been proposed [24] that take benefit from the elasticity of the Cloud, starting and stoppping virtual machines on demand. They suffer from several shortcomings. Often they consider only one objective, the reduction of the cost, or a level of quality of service. We proposed to optimize two conflicting objectives, the number of migrations of tenants that is helpful to reach the optimal cost and the cost incurred considering a set of resources. Our approach allows to take into account the multi-tenancy property and the Cloud computing elasticity, and is efficient as shown by an extensive experimentation based on real data from Bonita BPM customers [9].