====== Service-Oriented Architecure (SOA) ====== A Service-Oriented Archicture is one where rather than having one large, enterprise application, the business requirements are divided up into finer grained **services**. These services are loosely coupled and communicate by sending messages to one another, usually over a network. This is often done over the web, via [[web services]] (as defined by IBM or Microsoft), or in the lighter form of [[REST]] (Representation State Transfer).