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Spec-Driven Development in 2026: What It Is, the Tooling, and How Teams Actually Use It
A field guide to the practice that's reshaping how software gets built with AI agents.
TL;DR — Spec-Driven Development (SDD) makes a precise, executable specification the source of truth and treats code as a generated, verifiable artifact. The spec declares intent ; the code realizes it. In 2026 it went mainstream because AI agents are great at writing code and terrible at guessing what you meant.
Jump to: Why now · Specs vs. executable specs · Maturity model · Workflow · Too...
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