[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"glossary-viral-coefficient::en":3,"gloss-cluster-viral-coefficient::en":23,"gloss-next-viral-coefficient::en":9},{"slug":4,"category":5,"name":6,"definition":7,"meta_desc":8,"faq":9,"schema_markup":9,"related":10},"viral-coefficient","growth","Viral Coefficient (K-Factor)","The viral coefficient, or K-factor, measures how many new users each existing user brings in through invitations or shares. Multiply the average number of invites a user sends by the conversion rate of those invites: if 100 users each send 4 invites that convert at 25%, K = 1.0, meaning every user recruits one more and growth is self-sustaining. A K above 1 produces exponential growth; below 1, referrals amplify other channels but don't stand alone. For SaaS builders it quantifies whether a referral or sharing loop is actually working. Why it matters: teams often assume \"going viral\" is luck, but K is an engineerable number driven by invite prompts, incentives, and cycle time. Practical note: most products never exceed K=1, and that's fine — a K of 0.4 still cuts effective acquisition cost sharply. Optimize invite placement, reduce friction to accept, and shorten the loop's cycle time.","The viral coefficient (K-factor) is invites sent times their conversion rate — K above 1 means self-sustaining growth, and almost nothing sustains that for long.",null,[11,14,17,20],{"slug":12,"name":13},"activation","Activation",{"slug":15,"name":16},"cac","Customer Acquisition Cost (CAC)",{"slug":18,"name":19},"funnel","Funnel",{"slug":21,"name":22},"product-led-growth","Product-Led Growth (PLG)",[24,28,31,34,37,40,43,46,49,52,55,58],{"slug":25,"category":5,"name":26,"updated_at":27},"attribution-model","Attribution Model","2026-08-24T02:46:38+00:00",{"slug":29,"category":5,"name":30,"updated_at":27},"channel-market-fit","Channel-Market Fit",{"slug":32,"category":5,"name":33,"updated_at":27},"content-brief","Content Brief",{"slug":35,"category":5,"name":36,"updated_at":27},"content-optimization","Content Optimization",{"slug":38,"category":5,"name":39,"updated_at":27},"conversion-rate-optimization","Conversion Rate Optimization (CRO)",{"slug":41,"category":5,"name":42,"updated_at":27},"growth-loop","Growth Loop",{"slug":44,"category":5,"name":45,"updated_at":27},"jobs-to-be-done","Jobs to Be Done (JTBD)",{"slug":47,"category":5,"name":48,"updated_at":27},"keyword-cannibalization","Keyword Cannibalization",{"slug":50,"category":5,"name":51,"updated_at":27},"lead-scoring","Lead Scoring",{"slug":53,"category":5,"name":54,"updated_at":27},"lifecycle-email","Lifecycle Email",{"slug":56,"category":5,"name":57,"updated_at":27},"marketing-qualified-lead","Marketing-Qualified Lead (MQL)",{"slug":59,"category":5,"name":60,"updated_at":27},"network-effects","Network Effects"]