B2B SEO targets a committee of four to seven people making one large, slow, risk-heavy decision over six to eighteen months, where the terms that matter often carry fewer than 100 searches a month and the conversion event is an RFQ or a first conversation. B2C SEO targets an individual making a fast, low-risk decision with abundant search volume and a purchase as the conversion event. The most consequential difference is the measurement window: B2C SEO can be judged in weeks, while B2B SEO needs four to eight quarters before revenue effects are visible.