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Subject: Early pre-draft on two sections.
Just to demonstrate that I have not been completely lazy, here are two pre-drafts of sections on service operation and policies and expectations.
Interactions with services.doc
Some points to note: 1. Total amount of text seems to have shrunk quite a bit. a. I have kept most of the prior text on policy, but have essentially removed the stuff on contract life-cycle and types of contract. b. The stuff on interactions has also been mostly a refactoring of the earlier text. 2. Originally, I had deleted a lot of context stuff; but now have included a short text on it. The logic is this: there are 3 pieces to service interactions: the information you exchange, the process/ behaviour of the service/consumer and the execution context of the service. Execution context allows us to state what a policy is: it is a relationship between the public aspects of the service and its execution context. 3. Policies and expectations fit together pretty well. Contracts are not only agreed upon policies but also ways of documenting expectations. 4. The focus on expectations is, to some extent, my bias. The reason is that expectations are inherently measurable, where induced actions are inherently non-measurable. So, although there is a real world effect of using a service, it is measured in terms of expectations. Frank
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