Viral Coefficient
Definition
How many new users each existing user brings in. A coefficient above 1 means exponential growth—each user brings more than one new user.
Related terms in Growth & Marketing
All 100 terms →Go-to-Market (GTM)
Your strategy for reaching customers: who you're selling to, through what channels, with what message. Great products can fail with poor GTM.
Product-Led Growth
A GTM strategy where the product itself drives acquisition, conversion, and expansion. Users discover value through free usage rather than sales pitches.
Sales-Led Growth
A GTM strategy built around a sales team that nurtures leads and closes deals. Common in enterprise B2B where deals are large and complex.
Inbound Marketing
Attracting customers through content, SEO, and value—they come to you. Inbound is often more sustainable than paid advertising.
Outbound Sales
Proactively reaching out to potential customers through cold emails, calls, or LinkedIn. Outbound is common for B2B sales with identifiable target buyers.