Abstract

Abstract Cloud-based software is often considered as providing a greener, more energy-efficient solution. At the same time, it introduces more complexity and demands for new investments in cloud services, technologies, and competencies for migration, maintenance, and evolution of the underlying software architectures. To understand better the implications of cloud software architectures on energy efficiency, in this paper we present the preliminary results of a systematic literature review that investigates what kind of software architectures for cloud service provisioning allow to achieve energy-efficient solutions. Introduction Cloud computing infrastructures are often described as an energy-efficient technology Motivation Recently, the problem of defining SLAs for cloud services has been widely discussed among practitioners and experts of the field. Customers do not know precisely what should or shouldn't be included in an SLA regarding the provision of cloud services. On the other side, providers lack standard tools to assess and certify the level of the service they are providing, in terms of performance, reliability, serviceability etc. The same goes for EE: even if it has been proven that cloud technologies provide benefits in terms of energy savings