Aggregating Hierarchical Service Level Agreements in Business Value Networks

  • Irfan ul Haq
  • Altaf Huqqani
  • Erich Schikuta
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5701)


Business scenarios such as Business Value Networks and Extended Enterprises pose new challenges for service choreographies across heterogeneous Virtual Organizations. In such scenarios, services compose together hierarchically in a producer-consumer manner to form service supply-chains of added value. Service Level Agreements (SLAs) are defined at various levels in this hierarchy to ensure the expected quality of service for different stakeholders. Automation of service composition directly implies the aggregation of their corresponding SLAs. But so far, the aggregation of SLAs has been treated only as a single layer process which is insufficient to complement the hierarchical aggregation of services. In this paper we elaborate on the requirement of a hierarchical aggregation of SLAs corresponding to service choreographies in Business Value Networks. During the hierarchical aggregation of SLAs, certain SLA information pertaining to different stakeholders is meant to be restricted and can be only partially revealed to a subset of their business partners. We introduce the concept of SLA-Views to protect such privacy concerns. We, then formalize the notion of SLA Choreography and define an aggregation model based on SLA-Views to enable the automation of hierarchical aggregation of Service Level Agreements. The aggregation model has been designed to comply with the WS-Agreement standard.


Service Level Agreements Business Value Networks Value Chains SLA Management 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Blake, M.B., Cunnings, D.J.: Workflow composition of service level agreements. In: International Conference on Services Computing, SCC 2007 (2007)Google Scholar
  2. 2.
    NESSI-Grid, (last access: March 12, 2009)
  3. 3.
    Project, S.: (March 12, 2009),
  4. 4.
    Liu, D.R., Shen, M.: Workflow modeling for virtual processes: an order-preserving process-view approach. Information Systems 28, 505–532 (2002)CrossRefzbMATHGoogle Scholar
  5. 5.
    Liu, D.R., Shen, M.: Business-to-business workflow interoperation based on process-views. Decision Support Systems 38, 399–419 (2004)CrossRefGoogle Scholar
  6. 6.
    Eder, J., Tahamatan, A.: Temporal consistency of view based interorganizational workflows. In: 2nd International United Information Systems Conference, Austria (2008)Google Scholar
  7. 7.
    Frankova, G.: Service level agreements: Web services and security, pp. 556–562. Springer, Heidelberg (2007)Google Scholar
  8. 8.
    Unger, T., Leyman, F., Mauchart, S., Scheibler, T.: Aggregation of service level agreement in the context of business processes. In: Enterprise Distributed Object Computing Conference (EDOC 2008), Munich, Germany (2008)Google Scholar
  9. 9.
    Aiello, M., Frankova, G., Malfatti, D.: What’s in an agreement?An analysis and an extension of WS-agreement. In: Benatallah, B., Casati, F., Traverso, P. (eds.) ICSOC 2005. LNCS, vol. 3826, pp. 424–436. Springer, Heidelberg (2005)CrossRefGoogle Scholar
  10. 10.
    Schulz, K.A., Orlowska, M.E.: Facilitating cross-organisational workflows with a workflow view approache. Data and Knowledge Engineering 51, 109–147 (2004)CrossRefGoogle Scholar
  11. 11.
    Chebbi, I., Dustdar, S., Tata, S.: The view based approach to dynamic inter-organizational workflow cooperation. Data and Knowledge Engineering 56, 139–173 (2006)CrossRefGoogle Scholar
  12. 12.
    Chiu, D., Li, K.K.Q., Kafeza, E.: Workflow view based e-contracts in a cross-organisational e-services environment. Distributed and Parallel Databases 12, 193–216 (2002)CrossRefzbMATHGoogle Scholar
  13. 13.
    Ludwig et al: Web service agreement (ws-agreement). gfd.107 proposed recommendation (last access: July 12, 2008)Google Scholar
  14. 14.
    (OGF), O.G.F.: (last access: March 12, 2009)
  15. 15.
    ul haq, I., Huqqani, A.A., Schikuta, E.: A conceptual model for aggregation and validation of slas in business value networks. In: The 3rd International Conference on Adaptive Business Information Systems, ABIS 2009 (2009)Google Scholar
  16. 16.
    Jha, S., Merzky, A., Fox, G.: Using clouds to provide grids with higher levels of abstraction and explicit support for usage modes. Concurrency and Computation: Practice and Experience 21(8), 2087–1108 (2009)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Irfan ul Haq
    • 1
  • Altaf Huqqani
    • 1
  • Erich Schikuta
    • 1
  1. 1.Department of Knowledge and Business EngineeringUniversity of ViennaAustria

Personalised recommendations