Modernization
AS/400 and mainframe modernization, without the leap of faith.
Forty-year-old systems run core operations because replacing them has always been terrifying: the people who understood them retired, the documentation is gone, and the rules live only in the code. Chal-AI modernizes legacy estates to Azure in evidence-gated stages — led by a founder who has personally sold and governed a $4.4M provincial mainframe modernization.
Three stages, evidence-gated.
Each stage produces evidence before the next is scoped. No fixed price before the diagnostic exists.
Stage 0 — Legacy Intelligence Diagnostic
AI agents read your code, schema prints, and documentation at volume and generate the documentation set nobody has — program inventory, dependency maps, extracted business rules — every claim verified by specialists with your subject-matter experts. You learn exactly what you own before committing to anything.
- Program inventory
- Dependency maps
- Extracted business rules
- Specialist-verified documentation set
Stage 1 — Discovery + Proof of Concept
A costed modernization roadmap plus one real module rebuilt and running side-by-side against your legacy system, with a live record-level match rate. A board decision built on a working demonstration, not slideware.
- Costed modernization roadmap
- One module rebuilt and running
- Side-by-side legacy comparison
- Live record-level match rate
Stage 2 — Phased Migration
Module-by-module rebuild with every legacy interface intercepted first and parallel-run validation from the first sprint. You watch a match-rate metric, not a promise.
- Module-by-module rebuild
- Legacy interfaces intercepted first
- Parallel-run validation from sprint one
- Match-rate metric tracking
Find out exactly what you own — before you commit a dollar to changing it.
We never fix a program price before the diagnostic exists — that is how legacy programs end up 40% over budget.
Evidence first, commitment second.
Book a 30-minute conversation about your legacy estate.
Book a conversationA 30-minute conversation. No deck, no obligation. You leave with at least one useful idea either way.