可重用性是资产生命周期管理和面向服务架构的核心所在。
Reusability lies at the heart of asset lifecycle management and service-oriented architecture.
变更业务需求将迫使你的服务演变，这应该驱使你在你的SOA架构和设计实践中包含服务生命周期管理(SLM)。
Changed business requirements will compel your services to evolve, which should cause you to include service Lifecycle Management (SLM) capabilities in your SOA architecture and design practices.
最后但并非不重要的是，由于架构需求从属于持续的变更，所以需求管理在整个EA实现生命周期中都会发生。
Last but not least, since architectural requirements are subject to constant change, requirements management happens throughout the entire ea implementation lifecycle.
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