目录服务（处理网格基础架构的管理进程）并未将数以千计的服务器分到一个核心分组中，而是将所有成员归类为 20 个分组。
Rather than wrangling thousands of servers into a single core group, the catalog service (an administrative process which handles the structure of the grid) divides the members into groups of 20.
ESB 为 SOA 提供与企业需要保持一致的基础架构，从而提供合适的服务级别和可管理性、以及异构环境中的操作。
The ESB provides an infrastructure for an SOA consistent with the needs of the enterprise, to provide suitable service levels and manageability, and to operate in a heterogeneous environment.
当然，这将引出面向服务的观点，并对许多由中间件基础架构管理的底层实现细节进行抽象。
This, of course, will present a services-oriented view, abstracting many of the underlying implementation details that will be managed by the middleware infrastructure.
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