Spec-Driven Development: Introduction

Modern software development is changing quickly. Today, a large portion of application code is often generated with AI tools such as ChatGPT or GitHub Copilot. But as AI coding becomes more common, an important question emerges: What’s the best way to use AI when building large, complex applications? One answer gaining traction is Spec Driven Development . The Two Common AI Coding Approaches Right now, most developers tend to fall into one of two approaches when building software with AI: Vibe Coding Spec Driven Development Vibe Coding Vibe coding is the most natural and widely used approach. You prompt an AI model with a task, it generates code, and you continue refining the system through a series of prompts. For example: “Create an API endpoint for user registration.” “Add validation logic.” “Generate a React component for displaying user profiles.” For small features, prototypes, or experiments , vibe coding works extremely well. It’s fast, flexible, and often the easiest way to st