Stack Overflow - From Idea to Product | DevDay 2026

A VP of Product at Stack Overflow explains how a small team used OpenAI Codex to build two very different products: the enterprise knowledge intelligence layer Stack Internal and the experimental agent-first platform Stack Overflow for Agents. The discussion covers how to tune guardrails to product risk, how archetypes simplify multi-source enterprise ingestion, and how a community built for humans can be extended so agents both consume and contribute knowledge.