Given the W3C consensus on Orchestration and Choreography I propose to use these. It took a long time to get there and they seem to work in practice and of course they have W3C behind them.
Composition is another matter and seems to be easier to define - certainly the definitions thus far are close enough. The problem is the boundary between composition and orchestration since BPEL does both. Cheers Steve T On 20 Jul 2006, at 10:32, Gervas Douglas wrote: > I think it would be really useful if we could reach some sort of a > consensus on these definitions. "Orchestration" and "choreography" in > particular are typical of terms which spring up into public discourse > and then get bandied about as faddish terms, especially by markitechts > and CBSOs, with most people not having a precise idea of their > meaning. > > Gervas > > --- In [email protected], Teresa Jones > <[EMAIL PROTECTED]> wrote: > > > > As a musician, I would say that all words are incorrectly used in > IT.... > > However, I would perhaps try to define: > > Composition - putting together 'services' to make a 'composite > application' > > - i.e. one that may then be fairly fixed for some time. > > Choreography - the ability to sequence (loosely) services (which > could be > > human or computer) to be a business process. > > Orchestration - probably the same as the above, but perhaps at a > higher > > level? > > > > Teresa > > > > _____ > > > > From: Ashley at Metamaxim [mailto:[EMAIL PROTECTED] > > Sent: 19 July 2006 15:10 > > To: [email protected] > > Subject: 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 > > > > > > > > > ********************************************************************* > > IMPORTANT NOTICE > > > > The contents of this e-mail are privileged and confidential and > > intended for the addressee at the specified e-mail address only. > > Its contents may not be copied or disclosed to anyone other than > > the intended recipient. If this e-mail is received in error, > > please contact Butler Direct Limited immediately on > > +44 (0)1482 586149 with details of the sender and addressee and > > delete the e-mail. > > > > No responsibility is accepted by Butler Direct Limited in the event > > that the onward transmission, opening or use of this message and/or > > any attachments adversely affect the recipient's systems or data. > > It is your responsibility to carry out such virus and other checks > > as you consider appropriate. > > > > www.butlergroup.com > > > > > ********************************************************************* > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Great things are happening at Yahoo! Groups. See the new email design. http://us.click.yahoo.com/TISQkA/hOaOAA/yQLSAA/NhFolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/service-orientated-architecture/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
