Service-Oriented Architecture (SOA) is an IT architectural style that supports the transformation of your business into a set of linked services, or repeatable business tasks, that can be accessed when needed over a network. This may be a local network, it may be the Internet, or it may be geographically and technologically diverse, combining services in New York, London, and Hong Kong as though they were all installed on your local desktop. These services can coalesce to accomplish a specific business task, enabling your business to quickly adapt to changing conditions and requirements. (Coutesy - IBM)
Find this pen in the above definition and keep it in mind throughout this blog.
This definition for SOA could be easy to understand on what it is. But, to drill down there are many technologies that are used to build an SOA platform. So, its a good idea to start off with what they are and how they are related to this Architectural style.
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