Spec Driven Development: The End of Vibe Coding

Abstract

Developers now create entire applications by simply chatting with AI tools. More and more startups rely on predominantly AI-generated code. But what initially thrilled developers quickly leads to frustration: generic code, poor architecture, and security issues. Spec Driven Development uses precise specifications as the single source of truth, from which plan, tasks and implementation are derived. A structured four-phase approach — Specify, Plan, Tasks, Implement — replaces trial and error with a process that produces the same result on the second run. The talk demonstrates the method on a real project and is equally clear about where it does not pay off.