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Until now, we have intentionally avoided mentioning the term SOA during this short exer-
cise of outlining the keystones of the requirements analysis. The purpose is quite straight-
forward: if you could clearly define your goals in a very precise way and declare concise
characteristics in support of these objectives, it really doesn't matter what the name of
your design approach is. Some can call it common sense, and that's perfectly fine. Noth-
ing could be better than a design approach based on common sense, which is easily com-
prehendible by business and IT. However, apparently something else is needed, and that
would be the design principles as a strong foundation for the first two keystones.
In the following paragraphs, we will outline this foundation again using the classification
provided by a best-selling SOA author and founder of the SOA School, Thomas Erl,
which is accepted by Oracle. This time, we will strongly focus on SOA and Service-Ori-
ented Computing ( SOC ) as the best technical implementation of common sense depicted
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