When interviewing at Notion ~4 years ago, I was asked how I'd approach segmenting our market. Oof. How do you find focus with a horizontal product, that's infinitely flexible, and used by 100M global users ranging from my 9 year old niece to execs at large enterprises? Sure, data and frameworks (a nice 2x2 never hurt anyone). But the answer is mostly "leave the building." Go talk to customers. Ask how they describe what it is you do, why they choose you, and how to serve them better? For Notion, those customers span what we call the Fortune 5M. It's the hottest AI startups, resilient small businesses, aspiring enterprises, and entrepreneurs building the next thing. Builders and operators inside ambitious companies. Ramp and OpenAI running their business on Notion. Toyota reinventing how their employees work. An up-and-coming UK agency like BrainLabs building their BrainOS. The supermarket feeding 90% of a continent. A coffee shop in NY. A small goat supply business in Addy, Washington (population: 210), automating work with 2,176 agent runs last month. They all have the right to benefit from AI.