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   RE: [xml-dev] Web Services/SOA (was RE: [xml-dev] XML 2004 weblog items?

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  • To: "Mark Baker" <distobj@acm.org>
  • Subject: RE: [xml-dev] Web Services/SOA (was RE: [xml-dev] XML 2004 weblog items?)
  • From: "Chiusano Joseph" <chiusano_joseph@bah.com>
  • Date: Mon, 29 Nov 2004 14:49:09 -0500
  • Cc: <xml-dev@lists.xml.org>
  • Thread-index: AcTWSzR+WNxHkdckT5629i8h3STIBgAARbaw
  • Thread-topic: [xml-dev] Web Services/SOA (was RE: [xml-dev] XML 2004 weblog items?)

> -----Original Message-----
> From: Mark Baker [mailto:distobj@acm.org] 
> Sent: Monday, November 29, 2004 2:42 PM
> To: Chiusano Joseph
> Cc: xml-dev@lists.xml.org
> Subject: Re: [xml-dev] Web Services/SOA (was RE: [xml-dev] 
> 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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