Architecting Agentic Development Platforms - Mallory Haigh & Ajay Chankramath | PlatformCon 2026

You have heard the what and the why of agentic software development. This session goes deeper into the how. The three-layer architecture that turns an Internal Developer Platform into an Agentic Development Platform: the tooling layer, the path definitions layer, and the agent infrastructure with harness and governance plane that makes it all governable. We will walk through three live paths. A probabilistic path where an agent reviews code against a context stack and gets scored by an LLM-as-judge. A deterministic path where the CI pipeline runs identically whether the committer is human or not. And a hybrid+gate pattern where an agent submits a candidate, hits a deterministic gate, reads the failure signal, and iterates until convergence, bounded by a retry budget, governed by a definition of done. Each path exposes architectural questions your platform team needs to answer. Identity, context, capability, execution, evaluation, security, observability. The patterns you need to think through before the AI mandate lands. Learn more about this session: https://platformcon.com/sessions/arch... Get your copy of the book, Thinking in Platforms: https://weaveintelligence.io/thinking... Continue your platform engineering journey with Platform Engineering University: https://university.platformengineerin... Thanks for joining PlatformCon, the world's largest platform engineering conference. See you at the next one!