Many ask it. Now, after SOA Reference Model (SOA RM) released into the standard, it's easier to answer the question.
1. SOA differs from a service-based architecture (if anyone wants to make such distinction) is in that "the central focus of Service Oriented Architecture is the task or business function" versus an IT task/function and business operation automation. This means that SOA targets business services and processes primarily, not inherited obsolete or legacy operations and procedures.
2. SOA service may be MUCH richer than a technical service because SOA service is supposed to run in the "execution context", which is defined as The set of technical and business elements that form a path between those with needs and those with capabilities. The 'business elements' open absolutely new sphere of conditions, in particular, business conditions, that a regular service does not deal with.
3. The SOA RM outlines that it reflects business motivating considerations expressed within service descriptions and service interfaces, where the service description may be expressed in the form of the service contract which includes policies that MAY also express business-oriented policies such as hours of business, return policies and so on.
If you elaborate further on the business aspect of SOA, you will get a very much different picture of the service realm with different purposes, usage, governance, maintenance and, finally, concept than we have in 'regular' service-based architecture.
Besides these, I do not see differences. The service serves; the questions are how, where, why, when, to whom and if it's needed at all.
- Michael
Amit Saxena <[EMAIL PROTECTED]> wrote:
Hi,
I will appreciate if someone can point me the
difference between service based architecture and
service oriented architecture.
Thanks
Amit
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