This video introduces spec-driven development, a methodology for working with AI coding agents that involves defining a detailed specification upfront to guide the AI, preventing it from making assumptions and ensuring higher quality code. It differentiates AI specs from traditional software documentation, outlines a practical workflow for generating, refining, and executing tasks with AI, and demonstrates the process with a live coding example for a video analysis feature. The presenter advocates for a simpler, opinionated approach over complex frameworks, emphasizing incremental work and human review for optimal results.