Diana Hu, a YC Partner, argues that truly AI-native companies embed AI at their foundation—transforming it from a tool into the central intelligence layer that powers operations. This shift enables fully queryable systems where AI agents autonomously analyze data to refine sprint planning, accelerate decision-making, and replace traditional managerial middleware. As a result, engineering evolves into AI-augmented 'software factories,' where humans focus on defining specs and tests while AI handles code generation. Organizational design also transforms: instead of rigid hierarchies, teams coalesce around three emerging archetypes—individual contributors, directly responsible individuals, and AI founder types—who optimize for token efficiency and rapid iteration. Crucially, early-stage founders hold a distinct advantage: unburdened by legacy infrastructure, they can build AI-native systems from day one, achieving velocity and adaptability that incumbents struggle to replicate—even with internal skunk works.