一旦在虚拟提供者中添加了用于路由和策略管理的规则对象，它就成为了服务总线。

It becomes a service bus once you add rule objects for routing and policy management within the virtual provider.

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通过结合策略、规则管理和服务选择功能改进敏捷性。

Improves agility through a combination of policy, rules management and service selection capabilities.

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请注意，如果将虚拟提供者作为服务集成器使用，同时我们又在虚拟提供者(服务集成器)中添加了用于路由和策略管理的规则对象，那么它就变成了服务总线。

Note that the virtual provider, if used as a service integrator, becomes a service bus, if we also add rule objects for routing and policy management within the virtual provider (service integrator).

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