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Unlock the Value Trapped in Legacy Systems

Mainframe Modernization

Strategic mainframe modernization services — assessment, re-platforming, re-hosting, and cloud migration — that preserve your business logic while eliminating the cost, risk, and rigidity of legacy infrastructure.

Modernize Your Systems
60%
Reduction in infrastructure costs post-migration
Zero
Downtime during cutover (parallel run approach)
3x
Faster feature delivery post-modernization
100%
Business logic preservation guarantee

Mainframe systems represent decades of business logic and institutional knowledge. But they also represent enormous ongoing costs, scarce talent pools, and a growing inability to support modern digital initiatives. The question is not whether to modernize — it is how to do it without disrupting the business processes that depend on these systems.

Evanston's mainframe modernization practice brings a structured, risk-managed approach to legacy transformation. We assess your current environment, define the right modernization strategy (re-host, re-platform, re-factor, or replace), and execute the migration with zero-downtime cutover protocols.

What We Deliver

Mainframe assessment and TCO analysis
COBOL, PL/I, and Assembler code analysis and refactoring
Re-hosting to cloud-native mainframe emulation
Re-platforming to modern Java/.NET architectures
Database migration (DB2, IMS, VSAM to modern RDBMS)
API layer creation for mainframe data exposure
Testing automation for mainframe workloads
Parallel run and cutover management

Use Cases

Core Banking Modernization

Migration of core banking systems from mainframe to modern cloud-native architecture — preserving all business logic while enabling digital banking capabilities.

Insurance Policy Administration

Re-platforming of legacy policy administration systems to modern architectures that support real-time pricing, digital channels, and API integration.

Government Records Modernization

Migration of government records management systems from mainframe to cloud — improving citizen service delivery and reducing operational costs.

Mainframe API Exposure

Creating modern REST APIs over existing mainframe systems — enabling digital channels and third-party integrations without full replacement.

Ready to Get Started with Mainframe Modernization?

Schedule a consultation with our team to discuss your specific needs and how we can help you achieve your goals.

Modernize Your Systems