Chinese e-commerce buzzword.
私域流量 ('private-domain traffic') = audience the brand can message at zero marginal cost — WeChat
个人号 contacts,
企业微信 customer groups, mini-program subscribers. Contrasts with
公域 (public domain: paid ad traffic on Tmall, Douyin, etc., which the platform owns). The shift from
公域 to
私域 became Chinese e-commerce's central strategic obsession around 2019-2021.