Self-service model is a channel where a customer can use & make a purchase without talking to a sales person. It involves sign ups, getting resources to self-onboard, make payments (e.g. credit cards), and also deactivation of account.
Bottom-up selling motion & consumerization of enterprise software have driven a huge focus on self-service model especially for B2B products. This channel works especially well, if your GTM (go-to-market) has built an inbound engine (refer to [[First 100 Customers]]) using content & SEO, which will drive additional capital efficiency for your business (and lower CAC payback periods - [[Metrics]])