mid office,back office and other supporting services怎样翻译,

翻译：交易中台,后台 和其他辅助服务.
注：交易前台、中台与后台（英语叫：the front office,the middle office或the mid office,the back office.
一个金融服务公司（比如说银行）分成3部分.the front office,the middle office或the mid office,the back office
用英文解释的话：
A financial services company is logically broken up into three parts:the front office includes sales personnel and corporate finance; the middle office manages risk and IT resources; and the back office provides administrative and support services.

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