AI Cut Our Research Time From 7 Days to 15 Minutes — Gareth Yoder, Vanguard
AI Engineer — Oct 21, 2026 — talk
Why watch
Gareth Yoder from Vanguard demonstrates how exposing legacy mainframe code to AI tools via an MCP server cut research time from 7 days to 15 minutes for a cash ledger handling 30 million daily calls. This deep-dive covers running three parallel migrations and provides five key lessons: making legacy code AI-queryable, treating migration docs as product, reimagination over lift-and-shift, incremental AI adoption, and prioritizing observability. For engineers facing legacy modernization challenges.