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> -----Original Message----- > From: Mark Baker [mailto:distobj@a...] > Sent: Monday, November 29, 2004 2:42 PM > To: Chiusano Joseph > Cc: xml-dev@l... > Subject: Re: Web Services/SOA (was RE: > XML 2004 weblog items?) > > Joseph, > > On Mon, Nov 29, 2004 at 11:07:59AM -0500, Chiusano Joseph wrote: > > > And more importantly I'd argue, *how* are those technologies used? > > > "SOA" encompasses many different architectural styles, > > > > I believe that SOA is *an* architectural style. > > It is, it's just not a particularly useful style Please define "useful". It sounds like the loose coupling, vendor neutrality, and business agility that they enable are not useful according to you? > because the > implicit constraints (nobody's yet been able to agree on any) > of SOA are so few. > Many SOA proponents I've talked to claim this is a good > thing, but the study of software architecture tells us the > exact opposite; that only via constraints are the necessary > architectural properties realized (and many more are required > for Internet scale solution than they are Intranet scale ones). > > FWIW, I was using it differently there, to basically say it's > used to simultaneously refer to styles akin to CORBA/OMA, > MOM, RPC, etc... > > > SOA is not a Web Services technology - Web Services are a tactical > > means to achieve the strategic goal of SOA (credit to > Burton Group for > > that characterization). > > Sounds like a cop-out to me; a layer of indirection which > allows the analysts to continue to tout "SOA", while "Web > services" take the heat from five years of hype and very > little in the way of demonstrated value. A lack of research sounds like a bigger cop-out to me ;) You should do your homework... Kind Regards, Joseph Chiusano Booz Allen Hamilton Strategy and Technology Consultants to the World > Mark. > -- > Mark Baker. Ottawa, Ontario, CANADA. http://www.markbaker.ca >
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