The rate at which affiliate-referred buyers begin but do not complete a purchase. Typically higher than site-average checkout abandonment because affiliate buyers are often first-time brand visitors without established trust. Primary reduction levers: guest checkout prominence (removing account creation requirement from primary CTA); discount code pre-application via URL parameter; mobile checkout optimization (high mobile traffic share from social-sourced affiliate clicks); and trust signals at checkout (return policy, review count, secure checkout badge). Abandoned cart emails with publisher discount code recover 5-15% of abandoned affiliate checkouts.
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