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Services in commercial or scientific environments often need to be delivered at guaranteed service level. This becomes even more important, if composition of services is required. WS-Agreement is a proposed recommendation of the Open Grid Forum (OGF) defining a language and a protocol to create SLAs. As the current version of the specification of WS-Agreement provides only a simple, one-step approach for the creation of SLAs the GRAAP working group of the OGF started working on a more sophisticated protocol allowing multi-step negotiations to create agreements. This paper presents the approach for negotiations of SLAs using WS-Agreement under specification at the OGF. It describes the state of the work and gives an outlook of the next steps until the specification will become a proposed recommendation.
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