The XP community has advocated the notion of the 'on-site customer.'

XP社区主张‘现场客户’的观念。

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The on-site customer describes the ideal system to the development team.

现场客户向开发小组描述理想的系统。

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Focus on an on-site customer and code, rather than other design artifacts.

专注现场客户和代码，而不是其他设计技巧。

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The Netflix service is widely recognized as among the best and most reliable in Internet commerce and has for eight consecutive polls been named the number one Web site for customer satisfaction by the independent Ann Arbor, Mich.

ENGADGET: Netflix notches 2 billionth delivery with a Blu-ray disc HD

"You don't even have to pick up the phone, " says Charles Collins, the site's customer service director.

FORBES: Magazine Article

Rather then returning the next day, Don stayed at the customer site until he could personally inspect the goods.

FORBES: The Importance Of Being A Customer Advocate