This document outlines 5 phases of startup growth: 1. Get Lean - Focus on problem/solution fit and building a minimum viable product through customer interviews and testing. 2. MVP - Learn what customers want through an MVP to prove demand while keeping costs low through iteration. 3. Head for PMF - Achieve product/market fit by reaching must-have scores and metrics like NPS above 40%. 4. Scale - Hire growth specialists to ramp up experimentation and find high impact growth opportunities. 5. Maturity - Pursue horizontal and vertical expansion through new channels, specialization, and acquisitions.