Retention

E-commerce

E-commerce

Retention is the share of customers who keep buying over time. Its opposite is churn: the share that leaves.

Keeping an existing customer almost always costs less than winning a new one, and it directly improves lifetime value. Yet most budget still goes to new visitors.

Measure retention per cohort — the group that became customers in the same month — so you can see whether new customers stick better or worse than the previous intake.

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