Most applications treat configuration as an afterthought. A .env file here. A config object there. Maybe a JSON or YAML file for convenience. Configuration is usually seen as: Setup Defaults Environment variables But not the system itself. That’s the mistake. What We Typically Do In most projects, the real logic lives in code: Routes define behavior Functions define flow Classes define structure Configuration just tweaks things: Ports API keys Feature flags It supports the system. It doesn’t define it. The Problem With Code-First Systems When behavior is defined primarily in code: Logic becomes scattered Patterns become inconsistent Intent is harder to see You have to read through multiple files to understand: What an endpoint does What data it expects What it returns The system exists… …but it’s buried in implementation. The Shift: Configuration as the Source of Truth What if configuration didn’t just support the system… What if it defined it?…