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Small/medium cloud storage providers can hardly compete with the biggest cloud players such as Google, Amazon, Dropbox, etc. As a consequence, the cloud storage market depends on such mega-providers and each small/medium provider cannot face alone the challenge of Big Data storage. A possible solution consists in establishing stronger partnerships among(More)
—Cloud Computing is becoming one of the most important topics in the IT world. Several challenges are being raised from the adoption of this computational paradigm including security, privacy, and federation. This paper aims to introduce new concepts in cloud computing and security, focusing on heterogeneous and federated scenarios. We present a reference(More)
Cloud federation is the future of the cloud computing. In such new emerging scenarios, the "hot" and "cold" migration imply the movement of a virtual machine disk-image from a server placed in a cloud provider to a server placed in another one, with a consequent consumption of bandwidth and cloud resources. This paper aims to reduce such costs proposing a(More)
Cloud environments offer a variety of concrete and abstracted entities which need to be identified. An example of cloud environment is the European project RESERVOIR, which similarly to other platforms characterized by a high level of dynamism, needs to identify and resolve resources. RESERVOIR has to manage allocation, deallocation and migration of virtual(More)
Cloud federation aims to cost-effective assets and resources optimization among heterogeneous environments where clouds can cooperate together with the goal of obtaining unbounded computation resources, hence new business opportunities. This paper describes an architecture for the federation establishment, where clouds that need external resources ask to(More)
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t Cloud federation offers plenty of new services and business(More)
Nowadays, Cloud federation is paving the way toward new business scenarios in which it is possible to enforce more flexible energy management strategies. Considering independent Cloud providers, each one is exclusively bound to the specific energy supplier powering its datacenter. The situation radically changes if we consider a federation of cooperating(More)
The advent of both Cloud computing and Internet of Things (IoT) is changing the way of conceiving information and communication systems. Generally, we talk about IoT Cloud to indicate a new type of distributed system consisting of a set of smart devices interconnected with a remote Cloud infrastructure, platform, or software through the Internet and able to(More)
The advent of both Cloud computing and Internet of Things (IoT) is changing the way of conceiving information and communication systems. Generally, we talk about IoT Cloud to indicate a new type of distributed system consisting of a set of smart objects, e.g., single board computers running Linux- based operating systems, interconnected with a remote Cloud(More)