COBOL IBM MQ modernisation

COBOL & IBM MQ

legacy code optimisation accelerated by watsonx Code Assistant for COBOL

COBOL still runs the world’s most critical transactions and IBM MQ still moves the messages between them. We modernise both — using IBM watsonx Code Assistant for COBOL to refactor faster, with less risk, and with the quality that mission-critical code demands.

EMPHASIS

AI-accelerated code optimisation.

vendor · IBM

software reference | legacy code optimisation | driving enterprise integration and modernisation®

software reference

legacy code optimisation

driving enterprise integration and modernisation®

the software

what it is

COBOL is the language behind a vast share of enterprise transaction processing — banking cores, insurance platforms, government systems. IBM MQ is the reliable, transactional messaging fabric those systems rely on to talk to each other. Together they form the backbone of many enterprise estates. IBM watsonx Code Assistant for COBOL applies enterprise-grade AI to understand, refactor, optimise and selectively transform that code for a hybrid cloud future.

why it matters

The choice isn’t rewrite or freeze. COBOL estates carry decades of correct, tested business rules — and the cost of reimplementing them is usually far higher than the cost of maintaining them. But they do need to be readable, performant, and able to participate in a modern, event-driven estate. watsonx Code Assistant lets experienced engineers work faster on legacy code — refactoring with AI assistance, generating modernised components, and validating behaviour — while MQ keeps the transactional messaging layer resilient and auditable as it integrates with newer platforms.

capabilities

watsonx Code Assistant for COBOL

AI-assisted code explanation, refactoring and selective transformation — letting engineers understand existing COBOL quickly and modernise it incrementally.

COBOL refactor & optimise

Restructure monolithic programs into modular, maintainable units; improve performance and readability without changing business behaviour.

hybrid cloud enablement

Prepare selected COBOL workloads for hybrid cloud deployment, with clear boundaries between what stays on the host and what moves.

IBM MQ messaging

Reliable, once-only, transactional messaging across mainframe, distributed and cloud endpoints — the nervous system for COBOL-era integration.

functional equivalence validation

Verify that refactored or regenerated code preserves behaviour — non-negotiable for systems where correctness matters more than elegance.

event-driven bridges

Combine MQ with API and microservice patterns so COBOL-backed transactions participate in modern event flows without leaving their host.

where it fits & how we deliver

where it fits

  • Modernising banking, insurance, and government COBOL estates
  • Replacing tribal knowledge with AI-assisted code comprehension
  • Connecting COBOL transactions to modern APIs, events and analytics
  • Stabilising and governing IBM MQ fabrics across hybrid estates
how mWtech delivers
  • Assess the COBOL codebase and prioritise modules for AI-assisted modernisation
  • Apply watsonx Code Assistant for refactoring and optimisation
  • Validate functional equivalence before deployment
  • Design and operate MQ messaging patterns that bridge legacy and modern workloads

get in touch

let’s talk about COBOL & IBM MQ.

If legacy code optimisation is a challenge on your roadmap, we’d like to understand the problem and show you what works in practice.

we make systems work together.

COBOL IBM MQ modernisation