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About this Site
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There is no single governing standards body that defines the principles behind service-orientation. Instead, there are many opinions, originating from public IT organizations to vendors and consulting firms, about what constitutes service-orientation.
Service-orientation has been in a constant state of evolution, influenced by established design platforms, such as object-orientation, and primarily geared toward providing a distinct approach for realizing a separation of concerns.
I spent a good amount of time researching service-orientation in preparation for solution designs and while writing my second book about SOA. I found it interesting how the IT industry, as a whole, is moving toward a service-oriented architectural model without a clear, universal definition of what service-orientation actually is.
Despite this disparity, there is a sufficient (and growing) amount of commonality. Part of my research resulted in what I�ve called the �Common Principles of Service-Orientation,� which collectively represent a cross-section of mainstream principles that characterize service-oriented design.
When building solutions around the use of the Web services technology set, applying service-orientation is what distinguishes the solution as being �service-oriented,� as opposed to a traditional distributed solution that happens to use Web services.
I therefore believe that it is very important to understand service-orientation (and how it differs from past design approaches) before embarking on establishing service-oriented architecture within your organization.
You�ll notice that the focus of this site is on service-orientation only, not on SOA itself. This Web site simply separates the fundamental service-orientation principles as they apply to individual services. It describes each principle, discusses how principles support and affect each other, and takes a look at how individual principles relate to object-orientation.
The content on this Web site consists of a series of excerpts from "Service-Oriented Architecture: Concepts, Technology, and Design", supplemented by quotes from various IT professionals.
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