Source Stack · COBOL
Your COBOL applications run the business — but the people who wrote them are retiring, mainframe costs keep climbing, and integration with modern systems requires ever more middleware. Our AI factory parses your COBOL programs, copybooks, JCL, and CICS transactions, and converts them into modern application code your next generation of developers can own. Phased delivery. Full IP ownership. 3–5× faster than a manual rewrite.
Deep COBOL parsing in the factory. Proven mainframe-to-modern conversion pipeline.
The mainframe dilemma
Every year, more COBOL developers retire and fewer enter the field. Your bus factor shrinks. Mainframe licensing — MIPS, MSU, storage — only goes up. And bolting modern capabilities onto a mainframe-centric architecture means more middleware, more latency, more fragility.
COBOL mainframe estates are among the hardest to rewrite manually. Decades of business logic are encoded in programs, copybooks, and job control language that no single person fully understands. Manual rewrites take 3–7 years, cost tens of millions, and most fail — 74% of mainframe modernization projects stall or are abandoned.
Inside the COBOL factory
Our AI ingests your COBOL programs, copybooks, JCL, CICS BMS maps, DB2 schemas, and VSAM file definitions. It builds a complete map of every program, paragraph, data structure, transaction, and batch job. Decades of implicit knowledge become explicit and inspectable.
The AI emits idiomatic code in your chosen target stack — Java/Spring, .NET, Node.js, or Python. COBOL data structures become modern domain models. Batch jobs become scheduled services. CICS transactions become APIs. Senior architects review every structural decision.
Before any cutover, the AI synthesizes behavioral tests comparing new system output against mainframe output — transaction by transaction, batch job by batch job. You migrate on a passing diff, not on faith.
Three engagement stages
Start with a fixed-price diagnostic. If the conversion quality doesn't meet your bar, you owe nothing beyond the diagnostic fee.
Fixed price · 3–4 week turnaround · fee credited to full migration
Provide a representative set of COBOL programs. We convert them and deliver with audit + dependency map + complexity scoring.
Fixed price · scoped per program group · phased delivery
SLA-backed AI conversion of your entire COBOL estate into your chosen target stack. Delivered in months, not years. Phased releases with parallel running — legacy and new system operate side by side until cutover is validated.
6–12 month retainer
Architectural support to onboard your team into the new codebase, CI/CD pipelines, and delivery cadence. We stay until your team owns it fully — no handover cliff.
What you walk away with
Next step
Start with the Proof of Architecture Diagnostic. Fixed price, 3–4 weeks, and the fee is credited against the full migration if you proceed. We'll convert a representative set of your COBOL programs so you can judge the output before committing.