# Quality Assurance

1. 分享一个最近学到的术语：AB测试

   AB测试是为Web或App界面或流程制作两个（A/B）或多个（A/B/n）版本，在同一时间维度，分别让组成成分相同（相似）的访客群组（目标人群）随机的访问这些版本，收集各群组的用户体验数据和业务数据，最后分析、评估出最好版本，正式采用。

   可以看出 AB 测试 与 埋点系统，数据设计 数据清洗 数据分析统计，CDN 分发（灰度测试）关系很近


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