I like Frank's observation.

Cheers

Steve T

On 20 Jul 2006, at 17:31, Frank Leymann wrote:

> From my perspective, there is in fact a distinction between 
> orchestration and composition: Orchestration is one of many different 
> methods to compose services.  E.g. you can define compositions at the 
> type level and instantiate it afterwards (that what BPEL does, e.g.); 
> composition at the instance level is possible too (e.g. when an 
> agreement protocol is run between a collection of services); and so 
> on.
>
> ----- Ursprüngliche Mail ----
> Von: Ashley at Metamaxim <[EMAIL PROTECTED]>
> An: [email protected]
> Gesendet: Mittwoch, den 19. Juli 2006, 16:10:01 Uhr
> Betreff: Re: [service-orientated-architecture] Orchestration, 
> Choreography, and Composition
>
>
> Todd wrote:
>  
> > I thought I'd turn this into a group exercise and see how all of you
> > define it. (i.e., Orchestration, Choreography, and Composition)
>  
> Excellent. This should be fun!
>  
> In my view, Choreography defines a behavioural protocol to which 
> multiple parties must (or should) adhere when engaged in a service 
> based collaboration. I am sure that Steve R-T will give us the 
> definitive definition of Choreography!
>  
> Like you, Todd, I am not clear whether there is any real difference 
> between Orchestration and Composition. Perhaps Orchestration is the 
> means by which Composition is achieved?
>  
> Rgds
> Ashley
>
>
>  
>   




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