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European Conference on Advances in Databases and Information Systems

ADBIS 2018: New Trends in Databases and Information Systems pp 178–190Cite as

Comparing SLAs for Cloud Services: A Model for Reasoning

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Part of the book series: Communications in Computer and Information Science ((CCIS,volume 909))

Abstract

Nowadays cloud services are gaining their momentum. A Service Level Agreement (SLA) represents an agreement between a service provider and a customer for a particular service provision. Cloud providers and services are often selected more dynamically than in traditional IT services. Hence, services need to be compared according both to technical aspects and the promised SLAs, but no widely accepted model, standard or best practice, that would lead to a more rigorous SLA comparison, are currently available. In this paper, we present a conceptualization of SLAs including the explicit modeling of formulas for service level indicators, and its corresponding open, reusable ontological representation. On its top, we provide operators for analysis and comparison of SLAs, relying on a reasoning framework in Logic Programming capable to manipulate indicator formulas and other SLA features. We provide an evaluation by considering a cloud scenario where several SLAs have to be compared.

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Notes

  1. 1.

    https://www.w3.org/TR/owl2-profiles/.

  2. 2.

    Classes with namespace ‘KPI’ belong to the KPIOnto data model.

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Author information

Authors and Affiliations

  1. SET-LAB, Department of Engineering for Innovation, University of Salento, via Monteroni, 73100, Lecce, Italy

    Antonella Longo & Marco Zappatore

  2. DII, Department of Information Engineering, Marche Polytechnic University, via Brecce Bianche, 60131, Ancona, Italy

    Domenico Potena & Emanuele Storti

  3. RoboLab, University of Pavia, via Ferrata 5, 27100, Pavia, Italy

    Andrea De Matteis

Authors
  1. Antonella Longo
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  2. Domenico Potena
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  3. Emanuele Storti
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  4. Marco Zappatore
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  5. Andrea De Matteis
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Corresponding author

Correspondence to Emanuele Storti .

Editor information

Editors and Affiliations

  1. Eötvös Loránd University, Budapest, Hungary

    András Benczúr

  2. Abt. Informatik, Universität Kiel, Kiel, Germany

    Bernhard Thalheim

  3. Eötvös Loránd University, Budapest, Hungary

    Tomáš Horváth

  4. Politecnico di Torino, Turin, Italy

    Silvia Chiusano

  5. Polytechnic University of Turin, Turin, Italy

    Tania Cerquitelli

  6. Hungarian Academy of Sciences, Budapest, Hungary

    Csaba Sidló

  7. University of Nebraska–Lincoln, Lincoln, NE, USA

    Peter Z. Revesz

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Longo, A., Potena, D., Storti, E., Zappatore, M., De Matteis, A. (2018). Comparing SLAs for Cloud Services: A Model for Reasoning. In: Benczúr, A., et al. New Trends in Databases and Information Systems. ADBIS 2018. Communications in Computer and Information Science, vol 909. Springer, Cham. https://doi.org/10.1007/978-3-030-00063-9_18

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  • DOI: https://doi.org/10.1007/978-3-030-00063-9_18

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-00062-2

  • Online ISBN: 978-3-030-00063-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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