Customer retention metrics are the quantitative measures that track how many customers, and how much of their revenue, a business keeps over a defined period. The eight that actually predict renewals are: customer retention rate, churn rate, net revenue retention (NRR), gross revenue retention (GRR), repeat purchase…

Ecommerce customer retention is the discipline of turning one-time buyers into repeat customers, and it is where most direct-to-consumer (DTC) brands leave money on the table.

Customer retention is a company's ability to keep its existing customers paying, active, and loyal over a defined period, and it is measured by the customer retention rate — the percentage of customers a business holds onto across that window, calculated as ((customers at the end − new customers acquired) ÷ customers at the start) × 100.