Claim
PMF floor: 10 unaffiliated paying customers (not friends, not network). Don't kill a product that has 10 paying strangers — even at $20/month — because the path from 10 to 100 is almost always achievable. From there, T2D3 is the venture-backed SaaS trajectory: $1-2M ARR → triple to $3-6M → triple to $9-18M → double to $18-36M → double to $36-72M. Top-tier companies now follow T3D3 (triple three times before doubling) reflecting the higher investor bar.
Mechanism
The framework is diagnostic, not aspirational. If a company can't maintain these growth rates, one of three things is true: the market is smaller than assumed, the product lacks differentiation, or the GTM motion is inefficient. Each milestone triggers specific organizational changes — different hires, different metrics, different mistakes to avoid. The founder who knows which stage they're at makes structurally different decisions than the founder optimizing for arbitrary growth.
Conditions
Holds when:
- The company is venture-backed and pursuing the standard SaaS exit pattern.
- Market size supports the implied $36-72M ARR ceiling.
Fails when:
- Bootstrapped or Calm Company businesses optimizing for profit not growth (Jason Fried's playbook).
- Categories where TAM caps the trajectory below T2D3 levels.
Evidence
"10 unaffiliated customers — people who are not your friends, former colleagues, or existing network, who pay money for your product."
"T2D3: reach $1-2M ARR, then triple to $3-6M, triple again to $9-18M, then double twice to reach $36-72M."
— Jason Lemkin (synthesized from operator's published work)
Signals
- Board reporting maps to T2D3 stage with specific YoY growth target.
- Hiring plan ramps tied to the trajectory's stage gates, not arbitrary headcount goals.
- "10 paying strangers" is a tracked, named PMF metric — not vibe-checked.
Counter-evidence
Post-2022 SaaS reality has bent the T2D3 curve for many companies — capital-efficiency discipline now substitutes for raw growth in investor evaluation. Some categories (vertical SaaS, infrastructure) sustain healthy businesses well below T2D3 trajectories.
Cross-references
- (none in current corpus)