Enterprise ERP · Case study
ERP modernization: migrating a legacy ERP to .NET 8 without stopping the business
A mid-sized operation ran on an ageing monolithic ERP that nobody wanted to touch. We rationalised its processes and rebuilt it on a modern .NET foundation, module by module.
- Client profile
- Manufacturing and distribution business, India
- Scope
- Process rationalisation, ERP migration
- Stack
- Legacy ASP.NET WebForms to .NET 8 with Blazor Server
- Engagement
- Phased migration with live support
The situation
The challenge behind this ERP modernization project
The existing ERP had grown for years. Features had been added for individual customers and individual requests, and the codebase was hard to change safely. Releases were slow, and each fix risked breaking something elsewhere.
The business could not stop for a rebuild. Stores, production, sales and finance all ran on the system every day.
The aim was a platform that is easier to change, secure to current standards, and ready for the next ten years.
Why it needed both
Why ERP modernization needs consulting and engineering together
Advice alone
A transformation roadmap with a big-bang cut-over that the operation could not survive.
Build alone
A faithful rewrite that copied twenty years of workarounds into a new codebase.
How the engagement ran
Our ERP modernization approach: four stages, one team
- Stage 1
Diagnose
Mapped modules, data and dependencies, and sorted every feature into keep, simplify, or retire with the business owners.
- Stage 2
Design
A target architecture, a migration order that put low-risk modules first, and a data strategy for running old and new side by side.
- Stage 3
Deliver
Modules rebuilt on .NET 8 and Blazor Server in sequence, each cut over after parallel running and sign-off by its users.
- Stage 4
Run
Live support during each cut-over, with a standing backlog for the next module and for performance tuning.
What the client got
What we delivered: an operating model and a platform that agree
From the consulting side
- A rationalised process set, with unused features retired instead of ported.
- A migration order agreed with each department head.
- Cut-over criteria that users defined and signed for every module.
From the technology side
- A modern, maintainable codebase with clear module boundaries.
- Old and new running side by side through shared data during the transition.
- Security and audit controls aligned to current practice.
“We never had a weekend where the business stopped. Each module just changed underneath us and got better.”
Questions
ERP modernization: common questions
What is ERP modernization?
It is moving an existing ERP to a current platform and cleaning up the processes it supports, instead of replacing it in one risky step or copying old workarounds into new code.
Why migrate from ASP.NET WebForms to .NET 8 and Blazor?
WebForms is a legacy framework that is hard to extend and secure. .NET 8 with Blazor Server gives a supported, maintainable base that keeps the team in the Microsoft .NET ecosystem.
How is downtime avoided during an ERP migration?
Modules move in a planned order, old and new run side by side on shared data, and each cut-over happens only after parallel running and user sign-off.
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