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Improved efficiency, new services, access to legacy apps - the advantages of service-oriented architecture seem endless. But there is a catch. The little question of security. Service-Oriented Architecture (SOA) represents a huge shift in the way they approach computing. It's a business methodology more than a technological approach and lets organisations get more from existing systems. An SOA is more efficient because it calls up just those parts of applications required to perform a service, rather than loading the entire application. It also allows functional components of different applications to be combined in innovative ways to develop new services. But there is a downside. An SOA can also increase security problems. Each software component must be authenticated when it is accessed.
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