Service-Oriented Architecture- Definition

SOA or service-oriented architecture basically is a collection of services focusing on services. It has been around for many years now. In my opinion, it is a concept and future post I will try to explore the value of SOA.
There are many SOA frameworks/models define and available on the net. As for now I leave the post with this definition found on wiki.

One of the strong member for SOA,OASIS defines SOA as the following:
A paradigm for organizing and utilizing distributed capabilities that may be under the control of different ownership domains. It provides a uniform means to offer, discover, interact with and use capabilities to produce desired effects consistent with measurable preconditions and expectations