Spec Driven Development
The Fifth Generation of Programming Software engineering is entering its fifth generation. While previous shifts moved from machine code to high-level languages like Python, the current era is defined by Large Language Models (LLMs) and autonomous agents. However, unstructured AI coding, often called vibe coding creates systemic fragility. Undirected AI coding increases code complexity by 41% and can inject security vulnerabilities into over 90% of outputs. Spec-Driven Development (SDD) is the disciplined response. SDD mandates that system intent and constraints be defined in machine-readable formats like OpenAPI, YAML, or Markdown before implementation. In SDD, the specification is the executable infrastructure; code is merely a transient byproduct. ...