RE: [soa-forum] Question/Issue for the SOA CoP

["Metz Rebekah" <metz_rebekah@xxxxxxx>]

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From: soa-forum-bounces@xxxxxxxxxxxxxx [mailto:soa-forum-bounces@xxxxxxxxxxxxxx] On Behalf Of David RR Webber (XML)
Sent: Thursday, August 17, 2006 1:18 PM
To: Service-Oriented Architecture CoP
Subject: RE: [soa-forum] Question/Issue for the SOA CoP

 

[->] David,

 <snip> and bravo!

 

I've also seen the need to return to the critical topic of "loose coupling".  Everyone claims they are doing loosely coupled implementations, but are they really?!?

 

What does loose coupling REALLY mean - both in terms of transport layer integration, AND information exchange integration?!

[->] I applaud your recognition that what the phrase ‘loose coupling’ intends to convey is not just integration at a technology level – it is at the business level!  There are certainly many aspects of integration and I believe that all of them have an impact on ‘loosely coupled.’  What is actually loosely coupled?  If two systems both speak http, does that mean that when those systems are used as tools that they are ‘loosely coupled?’; are the humans that rely on those tools ‘loosely coupled?’

 

The XML/edi Group first coined the term 'loosely coupled' back in 1998 - but since then it has taken on a marketing gloss - without folks really articulating what and how their toolsets actually support it.

[->] In a recent conversation with a colleague, we also spoke of ‘coarse-grained’ in this same vein.  When is something ‘fine-grained vs. coarse-grained is largely dependent on perspective. 

 

Providing clear specifications and standards in support of loose coupling remains just as tough now as back in 1998.

 

Fortunately folks have at least learned now what does NOT work with XML and schema - and are now returning to the well to draw out what insights they need to leverage and understand to resolve the operational issues.

 

Hints: key words - Role, Context, self-adapting, fault tolerant, agile, simple XML....

[->] I also spent several years in the field of grid computing research, just as it started to migrate toward a web services based architecture.  I would venture that there are many lessons in terms of context, adaptation, agility and tolerance that could be learned from the grid community on these topics.

 

DW

[->] Rebekah

-------- Original Message --------
Subject: Re: [soa-forum] Question/Issue for the SOA CoP
From: "ajit kapoor" <ajitorsarah@xxxxxxxxxxxxx>
Date: Wed, August 16, 2006 6:18 pm
To: "Service-Oriented Architecture CoP" <soa-forum@xxxxxxxxxxxxxx>

Chris,

 

Thanks for sharing your work. I must say I agree with you in so much as it addresses the necessary technology conditions that must be met to have a SOA paradigm, but the sufficiency has largely been ignored (may be based on assumption that people and process based practices will follow).

 

I have been quite intrigued by the "SOA Buzz" industry wide but am concerned by the lack of understanding of the architecture (if viewed only from a technology viewpoint). The best practices should be addressed fundamentally from the view point of standard processes, people/organizational culture (a basic propensity to hinder change)and then overlay the technical layer on it. Also even on the technology front the standards are still in flux and the best efforts to integrate higher layer of the SOA protocol stack must rely on the WS Interoperability forum. Vendors are selling point solutions for the higher layer protocols and we will end up creating EAI equivalent of the SOA integration problem. Where will the values be in terms of reusability, etc. I believe the DoD and Government in general as part of the GIG/NC initiative must take the lead in coalescing multiple standards on all the fronts of people, process, and technology so as to start talking about best practices building blocks.

 

I look forward to other comments and potential recommendations. The result of this exercise should be, in my opinion, a roadmap from current SOA platform to the desired state with People, process and technologies roadmap defined in an evolutionary and standards way.

 

regards,

ajit kapoor

Lockheed Martin

EIS/CTO

(retiring October 1, 2006)

----- Original Message -----

From: Chris Gunderson

To: 'Service-Oriented Architecture CoP'

Sent: Wednesday, August 16, 2006 4:32 PM

Subject: RE: [soa-forum] Question/Issue for the SOA CoP

 

Brand, I’m working on a project sponsored by DISA Joint Interoperability Test Command.  A key component is the need to develop appropriate SOA implementation and validation and verification guidance.  The idea is to provide a useful service to GIG software developers that encourages re-use of best practices and code. 

 

The attached is a work in progress. 

 

So….1.  We have a mandate to do this work.  2. We have no “not-invented-here” issues. 3. We want to port as many industrial best practices as possible.  4.  We’re on a fast track.

 

We welcome any and all help from the SOA Forum.  The attached is very much a work in progress with no pride of authorship.

 

Best, Chris

 

Chris Gunderson

Research Associate Professor of Information Science

Naval Postgraduate School

Principal Investigator, W2COG and Netcentric Certification Office Initiatives

(O) 703 262 5332

(C) 831 224 5182

 

 

 

 

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From: soa-forum-bounces@xxxxxxxxxxxxxx [mailto:soa-forum-bounces@xxxxxxxxxxxxxx] On Behalf Of Niemann.Brand@xxxxxxxxxxxxxxx
Sent: Wednesday, August 16, 2006 3:08 PM
To: soa-forum@xxxxxxxxxxxxxx
Subject: [soa-forum] Question/Issue for the SOA CoP

 

I have been asked about the ownership/governance issue and whether any best practices exist for SOA. We covered governance in the First SOA Conference for E-Government, but I don't recall specifically ownership being discussed. Any suggestions, references, etc. would be appreciated.

 

Thanks, Brand

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