These are the 5 principles that guide Duolingo's growth strategy!

已经有很多产品从 Duolingo 身上汲取了灵感。

数据跟踪为产品迭代指明方向，数据分析一直是重要的产品演进方法论，设定科学的数据指标可帮助我们做出准确判断，甚至是生死攸关的里程碑决策。

本文列举 10 种产品指标并总结成清单，可直接使用帮助小伙伴们打怪升级。

How to decide the guiding metrics for every type of business, based on a survey of employees at over 40 of today's most successful growth-stage companies.

How to measure network effects divided into 5 categories: acquisition, competitors, engagement, marketplace, and economics-related metrics.