Service composition is one of the most interesting challenges facing the Service Oriented Architecture (SOA) paradigm. Its accomplishment promises to maximize the information reuse. Service composition mechanism wants to facilitate application development by combinations of existent resources which are exposed as services. This mechanism is associated with the notion of loose coupling. The diminution of dependencies between services is intuitively understood and gives immediate benefits. However, this intuitive understanding hides a lack of formal theories. In this paper, we intend to provide a clear definition of the loose coupling notion. We reuse the concepts introduced by our Composite Service MetaModel to identify its associated metrics. These metrics will allow for the comparison of existent service composition approaches. Moreover, they define some development guidelines for architects.
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机译：服务组成是面向服务的架构（SOA）范式面临的最有趣挑战之一。其成就承诺最大化信息重用。服务组成机制希望通过以服务的存在资源组合促进应用程序开发。这种机制与松散耦合的概念有关。在服务之间的依赖关系的减少直观地理解并提供即时益处。然而，这种直观的理解隐藏了缺乏正式理论。在本文中，我们打算提供清晰的耦合概念的定义。我们重复使用Composite Service Metamodel引入的概念来识别其相关指标。这些指标将允许比较存在的服务组合方法。此外，他们为建筑师定义了一些发展指南。
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