The WSLA Framework: Specifying and Monitoring Service Level Agreements for Web Services
Journal of Network and Systems Management
WSOL - Web Service Offerings Language
CAiSE '02/ WES '02 Revised Papers from the International Workshop on Web Services, E-Business, and the Semantic Web
QoS Aggregation for Web Service Composition using Workflow Patterns
EDOC '04 Proceedings of the Enterprise Distributed Object Computing Conference, Eighth IEEE International
Towards adaptive management of QoS-aware service compositions
Multiagent and Grid Systems - Special Issue on "Advances in Grid services Engineering and Management"
A framework for automated negotiation of service level agreements in services grids
BPM'05 Proceedings of the Third international conference on Business Process Management
Explaining the Non-compliance between Templates and Agreement Offers in WS-Agreement
ICSOC-ServiceWave '09 Proceedings of the 7th International Joint Conference on Service-Oriented Computing
An offer generation approach to SLA negotiation support in service oriented computing
Service Oriented Computing and Applications
Analysing dependencies in service compositions
ICSOC/ServiceWave'09 Proceedings of the 2009 international conference on Service-oriented computing
Aggregation patterns of service level agreements
Proceedings of the 8th International Conference on Frontiers of Information Technology
Dynamic service configurations for SLA Negotiation
Euro-Par 2010 Proceedings of the 2010 conference on Parallel processing
Capturing and Analyzing Service Network Models
Proceedings of International Conference on Information Integration and Web-based Applications & Services
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Service provisioning is largely built on agreements specifying the mutual responsibilities of service providers and their customers with respect to functional and non-functional parameters. Current SLA management approaches, i.e. WSLA, WS-Agreement, or WSOL, provide extensive SLA language formalizations and management frameworks. However, they focus on bi-lateral service requester/provider constellations neglecting the SLA management requirements of composite service providers, i.e. managing SLAs with atomic service providers and with composite service requesters and aligning both with each other. A SLA management solution for composite services has to consider the contribution of sourced services - formalized in their (atomic) SLAs (ASLA) - in the management of the provided service - formalized in its respective (composite) SLA (CSLA). This paper presents the novel COmposite Sla MAnagement (COSMA) approach for an integrated management of atomic and composite SLAs during their entire lifecycle. It can be utilized for controlling the relationships between ASLAs/CSLAs and thus serves as the basis for managing and optimizing the SLAs involved in composite services.