Although cloud computing service providers offer opportunities for improving the administration, reliability, and maintenance of hosted services, they also concentrate network resources and data in a small number of cloud service providers. The concentration of data and resources also entails various associated risks, including sharing the underlying infrastructure with unknown (and untrusted) ...

This paper aims to highlight the importance of end-to-end service quality for cloud services, with a focus on telecom carrier-grade services. In multi-tenant distributed and virtualized cloud infrastructures, the enhanced level of resource sharing raises issues in terms of performance stability and reliability of cloud services, threatening the possibility to offer precise service levels in end...

Cloud computing enables the sharing of resources such as storage, network, applications and software through internet. Cloud users can lease multiple resources according to their requirements, and pay only for the services they use. However, despite all cloud benefits there are many security concerns related to hardware, virtualization, network, data and service providers that act as a signific...

Internet communities are moving to the Cloud, but in addition to the advantages regarding cost and convenience, this also means that cloud service providers are increasingly in a position to aggregate large amounts of personal data, which means that it is becoming prudent to develop mechanisms that can contribute to limiting the information available to providers. In this paper we present a pro...

Cloud computing is an emerging paradigm, widely adopted in distributed and business computing. Nevertheless, the biggest issue with the large adoption of cloud computing is the perception of loss of security and control over resources that are dynamically acquired in the cloud and that reside on remote providers, and the strong integration of security mechanisms into system architectures. This ...

Cloud has become a promising service model for mobile devices. Using cloud services, mobile devices can outsource its computationally intensive operations to the cloud, such as searching, data mining, and multimedia processing. In this service computing model, how to build an economic service provisioning scheme is critical for mobile cloud service providers. Particularly when the mobile cloud ...

Cloud storage services are increasing in popularity and using a growing amount of bandwidth on the Internet. Insights on how much traffic is generated is needed for a number of reasons. Cloud storage providers are interested in serving their clients efficiently and effectively, and they want to know how their product is performing and how they can improve their service. Internet Service Provide...

Multi-criteria decision analysis (MCDA), one of the prevalent branches of operations research, aims to design mathematical and computational tools for selecting the best alternative among several choices with respect to specific criteria. In the cloud, MCDA based online brokers uses customer specified criteria to rank different service providers. However, subjected to limited domain knowledge, ...