Modelling and comparing cloud computing service level agreements

Authors:
Fatima Alkandari;Richard F. Paige
Affiliations:
The University of York, UK;The University of York, UK
Venue:
Proceedings of the 1st International Workshop on Model-Driven Engineering for High Performance and CLoud computing
Year:
2012

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Abstract

Service-level agreements are a critical mechanism underpinning the pay-per-consumption model of business for cloud computing. Cloud providers make a variety of services of different qualities available on-demand for consumers. However, there is no standard ontology, vocabulary, or set of mechanisms that can be used for systematically and semi-automatically expressing and comparing cloud SLAs. We report on research investigating the use of MDE principles and technologies for making cloud SLAs easier to write, use and semi-automatically compare by domain experts. Our ultimate objective is to make it easier for non-experts to take decisions by programmatically comparing different cloud SLAs. We propose a metamodel for both cloud consumer requirement and cloud provider SLAs, and exploit model comparison technology for automating the comparison process.