What leaders see
Work keeps moving, but only because people fill the gaps.
Teams rely on manual checks, side files, rekeying, status meetings, and individual knowledge to keep the process alive.
Services
Operational Prerequisite · Legacy Modernization
Legacy System Modernization
You can't modernize what you don't understand. We reverse-engineer your legacy system's business logic, migrate your data, and replace aging platforms in governed phases -- so your operation never stops during the transition.
01
The Problem
Legacy Systems Are Expensive to Keep and Dangerous to Replace
The problem is not one broken tool. It is an operating gap between who owns the work, which record can be trusted, and how exceptions move through the business.
What is actually happening
The workflow has no clean source of truth.
Records, rules, approvals, and handoffs are split across systems, so each step introduces delay or reconciliation.
What gets worse
Automation amplifies the weak spots.
The faster the business moves, the more bad data, exception work, and decision ambiguity compound across the operation.
02
What Changes
What Legacy System Modernization includes.
We reverse-engineer your legacy system's business logic, migrate your data, and replace aging platforms in governed phases -- so your operation never stops during the transition.
01
System Assessment & Documentation
Reverse-engineer and document your legacy system's business logic, data structures, integrations, and dependencies. Create the knowledge base that probably never existed.
Related service02
API Layer Development
Build a modern API layer on top of legacy systems so new applications can integrate without touching the core. Unlock your data without the risk of a full replacement.
Related service03
Phased Migration Strategy
Replace modules incrementally -- move order management first, then inventory, then financials. Each phase is self-contained with rollback capability.
Related service04
Data Migration & Validation
Migrate decades of historical data with format conversion, cleansing, and validation. No data left behind, no data corrupted in transit.
Related service05
Parallel Running
Run old and new systems in parallel with automated reconciliation. Switch over only when the new system proves it matches the old one's accuracy.
Related service06
Knowledge Transfer
Train your team on the new systems and document everything. The goal is independence, not a new dependency on us.
Related service03
How It Fits Your Operations
How Legacy System Modernization fits your operation.
Operations layerWhich manual workflow is costing the most time, rework, or decision delay.
Governance dependencyThe workflow needs clear ownership, trusted data, and exception rules before automation is worth building.
Operating data involved
orders
approvals
documents
exceptions
reporting handoffs
What Launchpad defines before engineering begins
- What the business needs to change and why.
- Which systems, records, risks, and readiness gaps shape the work.
- What should be built, how it fits the architecture, and in what order.
Related Foundations
What to evaluate next.
Follow the dependencies behind this service instead of treating it as an isolated project.
01
API and systems integration
Connect the records, applications, and ownership boundaries the workflow depends on.
Explore next step02
Data engineering and analytics
Give automation and reporting a dependable source of operating truth.
Explore next step03
AI automation and agents
Evaluate where governed AI can reduce repetitive work or improve a decision.
Explore next step04
Launchpad readiness and Roadmap
Assess readiness, dependencies, risk, architecture, and implementation order before engineering begins.
Explore next stepLaunchpad Before Engineering
Decide what to build and in what order.
Launchpad assesses the business and turns discovery into priorities, risks, readiness, architecture, and an implementation Roadmap. Metrotechs then engineers and supports the approved solution.
Metrotechs designs, builds, integrates, and supports the approved solution.
Launchpad keeps priorities, risks, owners, decisions, and delivery governance connected.
04
Delivery sequence
How Metrotechs delivers Legacy System Modernization.
We reverse-engineer your legacy system's business logic, migrate your data, and replace aging platforms in governed phases -- so your operation never stops during the transition.
01
Discovery
Audit the legacy system -- business logic, data model, integrations, customizations, and tribal knowledge. Identify what must be preserved vs. what can be retired.
02
Strategy
Define the modernization path -- API wrapping, module-by-module replacement, or full platform migration. Present risk analysis and timeline for each option.
03
API / Integration Layer
Build the integration bridge between legacy and modern systems. This alone often delivers immediate value by unlocking data for BI and automation.
04
Phased Replacement
Replace legacy modules one at a time with parallel running and validation gates. Each phase is a complete, tested unit before the next begins.
05
Decommission
Retire the legacy system with data archival, compliance documentation, and final validation. Clean cutover with no orphaned dependencies.
05
FAQ
Questions that usually decide the scope.
Straight answers to what operators ask before committing budget to this work.
Yes. We have extensive experience with AS/400 (IBM i) including RPG, COBOL, DB2/400, and green-screen applications. We can build API layers, extract data, and plan phased migrations off the platform.