Dormancy Threshold

The dormancy threshold is the length of inactivity after which an active user is reclassified as dormant and moves to another state in lifecycle reporting.

A sound threshold comes from the observed distribution of gaps between real sessions rather than from a round number: plot the gaps and take the point where the probability of returning collapses. It matters because nearly every lifecycle metric rests on this single value, from the dormant-user count to the resurrection rate and even churn when churn is defined behaviourally, so changing it shifts the whole dashboard without any change in behaviour. The common error is borrowing 30 days from another product, since a weekly-use tool and a once-a-year service cannot share a threshold. Note also that a short threshold inflates dormancy and resurrection at the same time.