Customer success is a post-sale discipline that emerged primarily in the Software as a Service (SaaS) industry, where recurring revenue models make retention and expansion critical to business health. Rather than waiting for customers to raise problems, customer success teams proactively monitor account health, drive product adoption, and intervene when usage signals suggest a customer is at risk of churning.
The function differs from customer support (reactive problem resolution) and account management (contract and commercial focus) by centering on the customer's measurable business outcomes—did they achieve what they bought the product to do?
Key metrics include:
- Net Revenue Retention (NRR)
- Gross Revenue Retention (GRR)
- Time to First Value (TTFV)
- Product adoption rate
- Customer health score
A mature customer success program typically includes defined onboarding playbooks, regular touchpoints scaled by account size, and a clear escalation path into technical support when product issues arise.