Self-service in SaaS enables customers to independently discover, purchase, onboard, and manage their subscription through product interfaces and automated workflows. It reduces customer acquisition costs and scales revenue without proportional headcount growth.

Example: A SaaS platform allows customers to sign up with a credit card, choose a plan, invite team members, and upgrade their subscription directly from the product dashboard, with no sales rep involved. 60% of its revenue comes from fully self-service accounts.