Dropbox: The Demo Video That Built a 75,000-Person Waitlist
Type: case-study
Stage: Stage 4: Prototype Proof
Difficulty: beginner
Before building the complex file-sync backend, Drew Houston released a 3-minute demo video. The waitlist grew from 5,000 to 75,000 overnight. Proved a well-executed functional simulation can validate demand and secure funding before a single line of production code is written.