Product-led growth (PLG) is the go-to-market model in which the product itself is the primary engine of acquisition, conversion and expansion: users discover the product through a free tier or trial, experience value before any sales conversation, adopt it bottom-up inside organisations, and convert to paid through in-product upgrade paths. Slack, Figma, Zoom and Notion are the canonical references; the buyer’s first demo is using the thing.
The model’s requirements are unforgiving: time-to-value must be minutes, the free tier must deliver real (but bounded) value, and pricing must scale along a natural usage axis — seats, storage, API calls. Its economics shine in efficient CAC and high organic growth, measured through activation, PQLs (product-qualified leads), expansion revenue and NRR. The known failure mode is the “leaky free” — a free tier generous enough to absorb all demand, or a product whose value only appears after organisational rollout, where pure PLG stalls and a sales-assist layer becomes necessary.
Self-serve means self-executing contracts
In PLG, nobody reads terms with a lawyer before clicking — the legal stack must work as click-through at scale: enforceable terms of service (clear acceptance UX, sensible change mechanics), a DPA bundled into the self-serve flow for business users, privacy architecture for product analytics (the engine of PLG runs on usage data — KVKK/GDPR bases and transparent telemetry disclosures are core product code), and consumer-law compliance where individuals subscribe (auto-renewal and withdrawal rules). Bottom-up adoption also creates shadow-IT exposure inside customer organisations; enterprise-readiness features — admin controls, SSO, audit logs — are partly legal-risk features, and pricing them is a compliance decision as much as a packaging one.
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