OTRA: A Risk Management Ontology for Transparent Service Level Agreements in Federated Cloud Environment

Giulia Biagioni, Resul Serkan Keskin, Lawrence Cook, Edwin Harmsma, Erik Langius

2025

Abstract

Cloud Federation, a model where multiple cloud providers collaborate to offer interconnected services, has become increasingly renowned in cloud computing. In this environment, Service Level Agreements (SLAs) play a critical role by formalising service expectations and fostering transparency between providers and consumers. Although existing SLA ontologies provide a semantic foundation for standardised SLA management, they lack components for detailed risk management and representation within SLA. This paper presents our work on developing OTRA - Ontology for Transparent Agreement - specifically designed for risk management within SLAs in federated cloud environments. By integrating structured risk identification, prevention and mitigation strategies, our ontology extends the Gaia-X Core Ontology. We validate our ontology through a controlled simulation that demonstrates its effectiveness in structuring SLA risk information, offering a foundation for transparent, accountable service agreements.

Paper Citation

in Harvard Style

Biagioni G., Keskin R., Cook L., Harmsma E. and Langius E. (2025). OTRA: A Risk Management Ontology for Transparent Service Level Agreements in Federated Cloud Environment. In Proceedings of the 15th International Conference on Cloud Computing and Services Science - Volume 1: CLOSER; ISBN 978-989-758-747-4, SciTePress, pages 119-126. DOI: 10.5220/0013209300003950

in Bibtex Style

@conference{closer25,
author={Giulia Biagioni and Resul Keskin and Lawrence Cook and Edwin Harmsma and Erik Langius},
title={OTRA: A Risk Management Ontology for Transparent Service Level Agreements in Federated Cloud Environment},
booktitle={Proceedings of the 15th International Conference on Cloud Computing and Services Science - Volume 1: CLOSER},
year={2025},
pages={119-126},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013209300003950},
isbn={978-989-758-747-4},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 15th International Conference on Cloud Computing and Services Science - Volume 1: CLOSER
TI - OTRA: A Risk Management Ontology for Transparent Service Level Agreements in Federated Cloud Environment
SN - 978-989-758-747-4
AU - Biagioni G.
AU - Keskin R.
AU - Cook L.
AU - Harmsma E.
AU - Langius E.
PY - 2025
SP - 119
EP - 126
DO - 10.5220/0013209300003950
PB - SciTePress