QoS-aware trust establishment for cloud federation

Ahmed, Usama, Al-Saidi, Asma, Petri, Ioan ORCID: https://orcid.org/0000-0002-1625-8247 and Rana, Omer F. ORCID: https://orcid.org/0000-0003-3597-2646 2022. QoS-aware trust establishment for cloud federation. Concurrency and Computation: Practice and Experience 34 (3) , e6598. 10.1002/cpe.6598

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Abstract

Cloud federation enables inter-layer resource exchanges among multiple, heterogeneous cloud service providers. This article proposes a Quality of Service (QoS) aware trust model for effective resource allocation in response to the various user requests within the Clouds4Coordination (C4C) federation system. This QoS mainly comprises of nine parameters combined into three categories: (i) node profile, (ii) reliability, and (iii) competence. Numerical values for these parameters are computed every ‘t’ seconds for each cloud provider. All values measured over an interval Δt are further processed by the proposed model to evaluate the utility associated with a provider (referred to as a discipline in the presented case study). The decision about interacting with a discipline in a collaborative project is based on this utility value. The systems architecture, evaluation methodology, proposed model, and experimental evaluation on a practical test bed is outlined. The proposed QoS-aware trust evaluation mechanism allows selection of the most useful (based on a utility value) providers. The proposed approach can be used to support federation of cloud services across a number of different application domains.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Computer Science & Informatics
Publisher:	John Wiley and Sons
ISSN:	1532-0626
Funders:	EPSRC/InnovateUK
Date of First Compliant Deposit:	1 September 2021
Date of Acceptance:	12 August 2021
Last Modified:	07 Nov 2023 05:32
URI:	https://orca.cardiff.ac.uk/id/eprint/143788

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