服务是在比对象和组件更高层(向业务对齐的方法)的抽象之上的定义。
A service is defined at a level of abstraction that is at a much higher (towards business alignment) level than that of objects and components.
它谈到了SOA最重要的特性，即IT/业务对齐和服务组装等，后者作为SOA架构风格的定义是否更好一些呢？
This gets to the most important SOA features like IT/business alignment, service composition, etc. Would you consider the latter as a better definition of SOA architectural style?
业务服务和IT服务之间的可追溯性通过在软件栈的多个层次提高重用，为企业带来了他们极需的IT和业务对齐。
This traceability between business services and it services brings in the much needed business to it alignment in an enterprise by fostering reuse at multiple levels in a software stack.
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