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Subject: RE: [soa-rm-ra] A general comment on the SOA RA
Jeff, I looked quickly through the previous version and did not find two much changes, compared to the current one. Yes you renamed the viewpoint, but it even in the previous version, the word business was there as just a name. The content was very similar to what it is now: "View focuses on what a SOA-based system means for people using it to conduct their business.9 The mode of business in a SOA-based system is characterized in terms of providing services and consuming services to realize mutually desirable real world effects." The word real world effect is vague enough to mean anything. Besides, and here is a kicker, service invocation does not really have to create a real world effect to be useful. Here is an example of using Turbotax service online (very appropriate timing wise). When you use this services you submit your financial documents and receive back the amount of tax that you owe or government owes to you. This is quite useful service, but a pure calculational one. It does not change anything in the world - just massage numbers. One can of course, say that returning back a tax amount is a real world effect, but is it really? And there is quite a few services like that, for example, calculating insurance quote. On another hand, if I am using a banking service to do money transfer, this one has a true real world effect - amounts are changing in my accounts. But I consider all of these service useful services. Now let's take a notorious example of temperature converter. From the outside it seems like a valid service, but in reality you will rarely (I think never) use this service in your SOA implementation. The reason is twofold: - I would be hard pressed to consider this one a useful business service; - The granularity of this one is so low, it does not make sense. So if I am developing SOA I need to know: -what constitutes a good service? -how do I ensure that my services are aligned and supporting my business? -how do I decide, which services makes sense for my business? -Do I grow my services organically - bottom up or do I try to develop overall enterprise model - top down. I think that in order for RA to be successful this considerations should be part of the document, even if they are just asked, not necessary answered. There is plenty of sources concentrating on this issues. -----Original Message----- From: Estefan, Jeff A [mailto:email@example.com] Sent: Monday, April 06, 2009 12:20 PM To: firstname.lastname@example.org Subject: RE: [soa-rm-ra] A general comment on the SOA RA Folks, Here is a link to our Public Review Draft 1 (PDR1) version of the RA released almost a year ago (I can hardly believe it!): http://docs.oasis-open.org/soa-rm/soa-ra/v1.0/soa-ra-pr-01.pdf In it, you will see the former name of the first viewpoint and associated view, which was referred to as the "Business via Services" viewpoint/view. It was renamed to the "Service Ecosystem" viewpoint/view based on feedback from the tutorial given at last year's OASIS Symposium and post subcommittee discussions. I would encourage you to have a look at the content of the former viewpoint reflected in PRD1 to if the spirit of the message has been lost given all the changes that have been made this past year; far too many in my opinion. I think we strayed from the 'business' focus of that viewpoint/view into a far too an abstract perspective leveraging the ecosystem concept. Those of you on the subcommittee already know that I have expressed my opinion on this matter a number of times. I think what Frank had captured in the PRD1 variant was closer to the mark but too many folks taking shots at it have muddled the message. Once again, I suggest it is time to re-assess. Wasn't that an action item a few months back? We simply dropped it. Shame on us. Finally, we need to be very clear about the distinction between the organizational principle of "service orientation" versus SOA. I see a lot of the former in the recent threads. Cheers... - Jeff --------------------------------------------------------------------- To unsubscribe from this mail list, you must leave the OASIS TC that generates this mail. Follow this link to all your TCs in OASIS at: https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php The information contained in this communication may be CONFIDENTIAL and is intended only for the use of the recipient(s) named above. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited. If you have received this communication in error, please notify the sender and delete/destroy the original message and any copy of it from your computer or paper files.