Modernizing the Legacy

Aggelos Bellos walks us through TalentLMS’s decade-old monolith makeover, showing how they kept innovation humming while refactoring a critical app. By tearing down DevOps silos and reshaping teams using Domain-Driven Design and Team Topologies, they turned a sprawling codebase into a nimble, sustainable modulith.

Along the way, they added living docs, embraced event-driven architecture, and mastered zero-downtime migrations—all without spawning new “micro-legacies.” Expect candid lessons from the trenches, practical takeaways, and a few laughs as they prove you can evolve a monolith without blowing it up.

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