这种拓扑可以联合一组在监控组织监控下适度自主的分支；它还使每个分支能够灵活地提供本地服务。
This topology can federate a set of moderately autonomous branches under the umbrella of a supervising organization; it also provides the flexibility of local services at each branch.
在可控制环境中监控用户组来跟踪运行的用户交互，帮助测定使用情况是否满足业务和可用性预期。
User groups can be monitored in a controlled environment to track their live interactions with the portal, to help gauge whether usage is meeting business and usability expectations.
控制器——该组件监控工作流相关的大量变量，并以最优化一小组参数为目标，决定需要多少ec2实例。
Controller - This component monitors many variables related to the work flow and decides how many instances of EC2 are necessary based on optimizing a small set of goals.
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