[Draft note for Manuel]: mirror of the ES version, same note about the "industry" framing applies.

A legacy system doesn't get replaced overnight — in the meantime it keeps supporting the business, and a poorly executed migration can cost more than the original problem. This service is for teams that need to modernize without pausing.

I've done this directly: high-availability backend systems for real-time satellite fleet tracking, migrating from a Java EE 7/8 base with Hibernate/Liquibase, and a legacy frontend (Backbone.js migrating to Angular), toward an architecture with automated deployments (Jenkins), containers (Docker), event-based messaging (Apache Kafka), and reproducible provisioning on AWS.

How I approach a legacy migration:

Diagnosis: which part of the system is real risk (won't start, won't scale, nobody understands it) vs. debt that can wait.
Incremental plan: migrate in parts, with the old and new systems coexisting as long as needed — never a "big bang" that bets the business on everything working on day one.
Execution with a safety net: tests, monitoring, and a clear rollback path at every migrated step.

This isn't a "rewrite everything from scratch" service — it's about taking a system that already works to a foundation your team can maintain and scale with confidence.

Have a legacy system that's costing you more than it should? Let's talk.