Cloud computing infrastructures support dynamical and flexible access to computational, network and storage resources. To date, several disjoint industrial and academic technologies provide infrastructure level access to Clouds. Especially for industrial platforms, the evolution of de-facto standards goes together with worries about user lock-in to a platform. The Contrail project [6] proposes a federated and integrated approach to Clouds. In this work we present and motivate the architecture of Contrail federations. Contrail's goal is to minimize the burden on the user and increase the efficiency in using Cloud platforms by performing both a vertical and a horizontal integration. To this end, Contrail federations play a key role, allowing users to exploit resources belonging to different cloud providers, regardless of the kind of technology of the providers and with a homogeneous, secure interface. Vertical integration is achieved by developing both the Infrastructure-and the Platform-asa-Service levels within the project. A third key point is the adoption of a fully open-source approach toward technology and standards. Beside supporting user authentication and applications deployment, Contrail federations aim at providing extended SLA management functionalities, by integrating the SLA management approach of SLA@SOI project in the federation architecture.

▶ Helps facilitate effective deployment of P2P networking and applications ▶ Brings together and fosters interaction among academic and industrial communities to promote further research ▶ Publishes original research papers, tutorials, reviews, case studies, and correspondences from the research, development, and standardization communitiesPeer-to-Peer Networking and Applications disseminates state-of-the-art research and development results to facilitate effective deployment of P2P networking and applications. The journal brings together and fosters interaction among academic and industrial communities to promote further research that leads to new P2P applications and services.This journal not only addresses research topics related to networking and communications theory, but also considers the standardization, economic, and engineering aspects of P2P technologies and their impact on software engineering, computer engineering, networked communication, and security. It includes papers addressing system, application, and service issues.Peer-to-Peer Networking and Applications publishes original research papers, tutorials, reviews, case studies, and correspondences from the research, development, and standardization communities.

The Internet of Things is expected to generate an unprecedented number of unbounded data streams that will produce a paradigm shift when it comes to data analytics. We are moving away from performing analytics in a public or private cloud to performing analytics locally at the fog and edge resources. In this paper, we propose a network of tasks utilizing edge, fog, and cloud computing that are designed to support an Analytics Everywhere framework. The aim is to integrate a variety of computational resources and analytical capabilities according to a data life-cycle. We demonstrate the proposed framework using an application in smart transit. INDEX TERMS Descriptive analytics, diagnostic analytics, predictive analytics, edge computing, fog computing, cloud computing, Internet of Things.

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