Chief Transformation
Officers

Playbook · Legacy × Manufacturing

Legacy Modernization in Manufacturing

Every manufacturing estate carries systems that predate the people running them. This playbook is about modernizing without betting the business — sequencing, wrapping, and migrating in slices the board can watch land.

The Terrain

On-prem ERP, custom PLC programs, and brittle integrations layered over decades.

Manufacturing legacy is physical: the ERP is on-prem and heavily customized, the PLC programs were written by a contractor who retired, and the integration layer is a folder of CSV exports on a schedule. It all works — until the one person who understands it takes vacation. Modernization here means respecting that production cannot stop while the estate is untangled.

The Moves

  • Build the integration map including the human ones — the analyst who re-keys is an interface too.
  • Put an industrial data layer between the plant floor and business systems so neither holds the other hostage.
  • De-risk the ERP question with a customization audit — most "requirements" turn out to be habits.
  • Version-control and document PLC and HMI programs before the knowledge walks out the door.

Symptoms

What we hear from manufacturing leadership teams

  1. The real production schedule lives in a spreadsheet owned by one planner.
  2. Downtime is explained in Monday meetings using numbers everyone quietly disputes.
  3. Quality escapes are caught by the customer more often than by the line.
  4. The ERP upgrade is unthinkable because of two decades of customizations.

See the full Manufacturing sector profile, engagement arc, and FAQ →

Keep Reading

Adjacent playbooks

Same sector · Manufacturing

Operational Excellence in Manufacturing

Production downtime, quality variance, and disconnected MES, ERP, and quality systems.

Same sector · Manufacturing

AI Transformation in Manufacturing

Predictive maintenance, computer vision QA, demand forecasting, and yield optimization.

Same challenge · Legacy

Legacy Modernization in Banking

Aging core banking platforms and tightly coupled middleware that nobody dares to touch.

Same challenge · Legacy

Legacy Modernization in Insurance & MGAs

Policy administration systems built decades ago, fed by spreadsheets and email.

Talk to a Manufacturing Sherpa about legacy modernization

Thirty minutes, no deck, no pitch — an honest read on your situation from an executive who has led this climb before.

Schedule a Strategy Call →Browse all sectors