Cloud Federations and Security Attributes

Nowadays, the concept of Federations has drawn attention of the research community in the area of cloud computing. In a cloud federation, cloud providers build trust relationships and share resources, aiming to overcome momentary resource shortage or to offer a wider range of resources to their users. This paper introduces an infrastructure for building a cloud federation, which defines organization principles and strategies for searching and acquiring resources in a federation. In addition, aiming to allow cross-domain identity management, the proposed infrastructure incorporates authentication and authorization mechanisms in the context of a federation. Simulation results show the feasibility of the proposed infrastructure.