Recurring revenue is a core metric for SaaS companies. It drives valuation, funding, and success. Revenue retention is a major concern for product managers. They need to understand what is going on with the revenue streams from their existing customers. Logo retention, Gross Retention, and Net Dollar Retention are three critical metrics. For private companies in 2021, the median Gross Retention was between 88% and 90%. The median Net Dollar Retention was between 60% and 148%. For public SaaS companies the median Net Dollar Retention rate was 114%.