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This can be helpful if the customer and test organization does not wish to have constant visibility to design debt activity.

如果客户和测试机构不希望对设计债活动有稳定的可视性，这就可以变得十分有用了。

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Acceptance Tests (also known as Functional Tests) are specified by the customer to test that the overall system is functioning as specified.

验收测试(也被称为功能测试)是由客户指定来测试整个系统是否完成既定功能。

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This is a relatively subtle way by Time Warner Cable to test customer response.

FORBES: Time Warner Cable Tinkers With Pricing, Stock Should Slip To $66

She added that the price testing was just one of the many small changes Amazon makes to its site on a regular basis to test customer reactions.

BBC: Amazon's old customers 'pay more'

Validation might be done a split test or by a customer usability test or by cohort analysis.

FORBES: Lean Startups Pt 4: Using Kanban To Validate Innovation