Holy grail of startup. PMF artinya produk solve real problem untuk market besar yang willing to pay.
Term dari Marc Andreessen. "When you have product market fit, you can feel it." Demand pull product instead of you push. Customer recommend tanpa diminta. Retention high. Growth organic.
Sean Ellis test: "How disappointed would you be if you could no longer use this product?" Kalau 40 persen+ jawab "very disappointed" = ada PMF. Quantitative tapi simple. Setup survey ke active user.
Growth slow. Churn tinggi. Sales harus ngotot push. NPS rendah (kurang dari 30). Word-of-mouth zero. Customer ngga beralih dari kompetitor. Funnel leak di mana-mana. Banyak metric "ok" tapi ngga ada yang "wow".
Growth organic. Churn rendah. Customer vocal di review. Sales jadi inbound. NPS 50+. Feature request banyak. Press coverage. Hire rate tinggi (people want to join). Setiap metric berkilau.
1) Define ICP (ideal customer profile) jelas. 2) Build minimum lovable product (bukan minimum viable). 3) Iterate berdasar customer feedback. 4) Pivot kalau perlu. 5) Measure PMF dengan Sean Ellis test. 6) Saat hit PMF, scale akuisisi.