# Building a Production-Ready AI Governance Stack (Part 3/3)

This is Part 3 of a three-part series on AI governance architecture. In Part 1, we explored the negative proof problem why signed receipts can't prove that unauthorized actions didn't happen. In Part 2, we examined pre-execution gates that evaluate policy before execution occurs. Today, we'll build a complete reference architecture showing exactly how these components fit together in a production system. Note: This series explores architectural patterns for AI governance based on regulatory requ