A TCS must be capable of organizing and controlling complex business operations including resource recruitment, business function management, concurrency control, and failure recovery.

TCS必须有能力组织并控制复杂业务运作，包括资源募集、业务功能管理、一致性控制，及失败恢复。

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With access control service, we can restrict the approach to critical resource, avoiding damage brought by illegal user's intrusions or legal user's inappropriate operations.

通过访问控制，既可以限制对关键资源的访问，也能够防止非法用户的侵入或者因合法用户的不慎操作而造成的破坏。

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