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Cloud computing enables businesses to use computing resources on-demand anywhere in the world without having to build and maintain computing infrastructures in-house. This model involves multiple parties performing diverse operations via the Internet across multiple organisations. Employees and consumers can access resources and services from their own and associated organisations. Despite the success...
This paper provides a brief introduction into emerging user requirements and expectations in the context of large cloud-based infrastructures. Observed cloud usage patterns are used to demonstrate the need for large federated cloud infrastructures, in particular cloud federations bridging the gap between private cloud infrastructures and large commercial public cloud providers. The paper proposes...
In this work we introduce the EUBrazilCC federated cloud e-infrastructure based on Fogbow, a new middleware designed to support federation of IaaS cloud providers according to a novel approach. It is based on the provision of federation functionalities offered at a higher architectural level than current approaches by being deployed on top of the IaaS cloud orchestrators of each federation member...
In cloud computing, "hybrid cloud" and "community cloud" are established jargon. These concepts, however, actually entail federation, that is, the ability to securely share compute resources. Cloud federation has been investigated at all levels of the system stack--infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). To better understand...
When a user accesses a resource, the accounting process at the server side does the job of keeping track of the resource usage so as to charge the user. In cloud computing, a user may use more than one service provider and need two independent service providers to work together. In this user-centric context, the user is the owner of the information and has the right to authorize to a third party application...
We introduce PSCEL, a new language for developing autonomic software components capable of adapting their behaviour to react to external stimuli and environment changes. The application logic generating the computational behaviour of systems components is defined in a procedural style, by the programming constructs, while the adaptation logic is defined in a declarative style, by the policing constructs...
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