Hi Anne,

> WS-Policy defines a framework for composing policy assertions, but it
> does not define standard policy assertion languages. 

WS-Policy *Attachment* does define a standard mechanism for how to
attach policies externally to something. For example, page 9 (Section
3.4) of [1] shows how one attaches a policy assertion to some external
thing (URI or whatever).

While this does not solve the problem of actual SLA assertions, it does
provide a "standard" (:-)) framework for how to associate the SLA
assertions with the overall framework. 

Sanjiva.

[1] ftp://www6.software.ibm.com/software/developer/library/ws-polat.pdf





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