Service Oriented Architecture is organization of the information system based on identification and arrangement of services and of the messages assuring their communication. The service itself is the cornerstone of the system architecture both in the specification phase and in the development and deployment phases.The SOA approach natively integrates principles of modularity, interfacing, exchanging by contract and interoperability.
The SOA approach natively integrates principles of modularity, interfacing, exchanging by contract and interoperability. In this way, it offers speedy adaptation of the IT system when faced with the development needs of the enterprise.

At the same time, it facilitates the leveraging of best practices thanks to the generation of reference patterns. These reference patterns may also be used for addressing the problems of systems convergence.