@proceedings {479, title = {Re-Powering Service Provisioning Through Virtual Machine Migration in Federated Cloud Environments: An Algorithm Combining Energy Sustainability and Cost-Saving Strategies}, journal = {The 4th International Workshop on CLoud for IoT (CLIoT 2016)}, volume = {Advances in Service-Oriented and Cloud Computing}, year = {2016}, month = {01/2018}, pages = {19-33}, publisher = {Springer International Publishing}, address = {Vienna, Austria}, abstract = {

Cloud federation offers new business models to enforce more flexible energy management strategies. Typically, an independent Cloud provider is exclusively bounded to the specific energy supplier powering its data center. The situation radically change if we consider a federation of cooperating Cloud providers. In such a context a proper migration of virtual machines among providers can lead to global energy sustainability and cost-saving strategies.\ 
In this paper, we discuss a decision algorithm, for Cloud federation brokerage, able to combine these two strategies. More specifically, we present a Multi-Criteria Decision Making (MCDM) algorithm able to discover the most convenient Cloud provider candidates to join a particular energy-aware federation. In the end, by modelling different possible real Cloud providers, we demonstrate how the algorithm can accommodate different Cloud federation scenarios characterized by particular energy-aware parameters.

}, keywords = {cloud brokerage, cloud computing, cloud federation, energy cost-saving, Energy Efficiency, energy management, Energy Sustainability}, issn = {978-3-319-72125-5}, doi = {10.1007/978-3-319-72125-5_2}, author = {Maurizio Giacobbe and Antonio Celesti and Maria Fazio and Massimo Villari and Antonio Puliafito} } @proceedings {348, title = {A Sustainable Energy-Aware Resource Management Strategy for IoT Cloud Federation}, journal = {The first IEEE International Symposium on Systems Engineering (ISSE)}, volume = {IEEE First International Symposium on Systems Engineering 2015 Proceedings}, year = {2015}, month = {09/2015}, pages = {170-175}, publisher = {IEEE Computer Society}, address = {Roma, Italy}, abstract = {

The advent of both Cloud computing and Internet of Things (IoT) is changing the way to conceive distributed systems. Nowadays, we can talk about IoT Cloud to indicate a new type of distributed system consisting of a set of smart IoT devices or sensors interconnected with a remote Cloud infrastructure, platform, or software. Energy sustainability in IoT Cloud providers offers new tempting business opportunities for organizations, but at the same time it raises new challenges. In this paper, a flexible IoT Cloud federation energy management strategy is presented for optimizing the allocation of geographically localized smart sensors. We define the concept of IoT Cloud Federation as a mesh of IoT Cloud providers that are interconnected to provide a universal decentralized sensing and actuating environment where everything is driven by constraints and agreements in a ubiquitous infrastructure.\ In particular, a dynamic algorithm able to improve energy sustainability in a federated IoT Cloud ecosystem is discussed. In addition, we analyze a use-case driven strategy that allows both IoT Cloud providers and brokers to determine the paths to reach possible destination IoT devices in which computational resources should be dynamically migrated in order to push down the energy consumption due to IoT distributed applications.

}, keywords = {cloud computing, Energy Efficiency, Energy Sustainability, federation, Green Computing, Internet of Things, Virtual Sensors}, issn = {978-1-4799-1919-2}, author = {Maurizio Giacobbe and Antonio Celesti and Maria Fazio and Massimo Villari and Antonio Puliafito} } @article {Giacobbe2015, title = {Towards Energy Management in Cloud Federation: A Survey in the Perspective of Future Sustainable and Cost-Saving Strategies}, journal = {Computer Networks}, year = {2015}, pages = {438-452}, abstract = {

Nowadays, the increasing interest in Cloud computing is motivated by the possibility to promote a new economy of scale in different contexts. In addition, the emerging concept of Cloud federation allows providers to optimize the utilization of their resources establishing business partnerships. In this scenario, the massive exploitation of {\.I}CT\ solutions is increasing the energy consumption of providers, thus many researchers are currently investigating new energy management strategies. Nevertheless, balancing Quality of Service (QoS) with both energy sustainability and cost saving concepts is not trivial at all. The growing interest in this area has been highlighted by the increasing number of contributions that are appearing in literature. Currently, most of energy management strategies are specifically focused on independent Cloud providers, others are beginning to look at Cloud federation. In this paper, we present a survey that helps researchers to identify the future trends of energy management in Cloud federation. In particular, we select the major contributions dealing with energy sustainability and cost-saving strategies aimed at Cloud computing and federation and we present a taxonomy useful to analyse the current state-of-the-art. In the end, we highlight possible directions for future research efforts.

}, keywords = {Energy Sustainability}, issn = {1389-1286}, doi = {http://dx.doi.org/10.1016/j.comnet.2015.08.031}, url = {http://www.sciencedirect.com/science/article/pii/S1389128615002911}, author = {Maurizio Giacobbe and Antonio Celesti and Maria Fazio and Massimo Villari and Antonio Puliafito} }