Abstract: A computer product and methodology for serving a cloud workload across multiple cloud service providers. A first evaluation is performed for a first configuration in a first cloud service of the plurality of cloud services, and a second evaluation is performed for a second configuration in a second cloud service of the plurality of cloud services. A first result of the first evaluation and a second result of the second evaluation are used to select an unevaluated configuration in one of the first and second cloud services for performing another evaluation.

Abstract: The invention is notably directed to a computer-implemented method, which aims at jointly identifying an optimal source of computerized resources and optimizing a configuration of the computerized resources. The method comprises configuring a Best-Arm Identification algorithm, in order to (i) associate arms of the algorithm with respective sources of computerized resources and (ii) connect the arms to one or more optimizers. Each of the optimizers is designed to optimize a configuration of such computerized resources. Next, the method iteratively executes the Best-Arm Identification algorithm to progressively eliminate the sources, with a view to eventually identifying one of the sources as an optimal source with an optimized configuration. Several iterations are accordingly performed. During each iteration, each of the arms is pulled and the rewards earned by pulling the arms are computed. Pulling each arm causes to optimize a configuration of computerized resources of a respectively associated source.