Open Source in Finance Forum London 2026

Most architecture reviews happen after the code is already written, too late to prevent drift. In regulated industries, governance lives in documents and review boards instead of the pull-request workflow where change actually happens.
This talk shows how CALM can serve as the architectural source of truth for PR-time compliance checks, pairing deterministic structural validation with contextual AI explanations.
I'll walk through an approach where approved architecture definitions are parsed from CALM, normalized into a graph, and used during code review to detect undeclared dependencies, bypassed boundaries, or unexpected interaction patterns, creating an auditable, scalable control point without slowing delivery.

The session covers the practical design of the validator, how deterministic checks and AI explanations complement each other, and why this model is especially relevant for financial services teams that need both control and evidence. Attendees leave with a pattern for using open standards and open source tooling to move architecture governance closer to the software delivery lifecycle.