The way to determine your essential metrics is to identify the actions that correlate most directly to users experiencing the core value of your product, such as, for Facebook, how many people users invite to join their friend circle, how frequently they visit the site, how many posts and comments they make, and how much time they spend on the site. You want to track, at a minimum, the metrics for each of the steps users must take to reach the aha moment and how often they are taking those steps. Take Uber, whose essential metric for riders is rides completed. So in addition to the number of
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