SDD (Spec-Driven Development) vs. Vibe Coding: Engineering Robust Software with AI in 2026
In early 2025, ‘Vibe Coding’ took the tech world by storm: conversational programming driven by intuition, natural language chats, and copy-pasting code without reading it. By late 2026, the harsh hangover of ‘Vibe Debt’ has crippled engineering teams with unmaintainable spaghetti codebases and silent regressions. We analyze the rise of Spec-Driven Development (SDD), the mature engineering methodology replacing ‘prompt-and-pray’ with executable specifications, typed schema contracts, and automated agentic verification loops.