Legacy Application Modernization Services
Extend your team. Or let CORE lead the project.
CORE Migration modernizes COBOL, IBM i (AS/400), PowerHouse and other legacy applications using experienced specialists, structured delivery methods and AI-assisted tools. Work with us as part of your team, or engage CORE to lead the project from design recovery and business rules extraction through engineering, testing and go-live readiness.
COBOL · IBM i / AS/400 · PowerHouse · Java · .NET
The services team behind CORE OneTool.
Business rules • Application design • Data relationships
Specialists and structured review at every stage.
Modernization expertise that fits your project
Bring CORE into the work where you need us most. We agree the scope, responsibilities and deliverables with your team before delivery begins.
Extend your project team
Add legacy and modern application specialists to fill capability gaps. CORE works within your delivery structure on agreed analysis, development, data conversion or testing tasks.
Deliver together
Combine your business knowledge and internal team with CORE’s modernization expertise and tools. We share delivery responsibilities and coordinate the work across discovery, engineering and validation.
Let CORE lead delivery
Engage CORE to manage the agreed modernization scope from design recovery through go-live readiness. Your team remains involved in business decisions, requirements validation and acceptance.
Legacy application modernization services, from discovery to go-live readiness
Start with a focused engagement or bring the stages together in one modernization project.
Assessment and design recovery
Understand the application before changing it. CORE examines source code, data structures, integrations and dependencies to define the modernization scope, risks and delivery plan.
Business rules extraction
Recover calculations, validations and decision logic embedded in legacy code. We organize the recovered rules and review them with your business and technical teams to support documentation, requirements and implementation.
Application and data modernization
Transform legacy applications for agreed target platforms, including Java and .NET. We combine engineering, data conversion and integration work to build a maintainable foundation for your business.
Testing and go-live readiness
Compare application behavior, reconcile converted data and investigate differences. CORE supports system testing, user acceptance testing and release preparation against agreed acceptance criteria.
COBOL, IBM i and PowerHouse modernization
Legacy environments need more than a generic rewrite plan. CORE combines knowledge of established systems with the engineering skills needed to move them forward.
COBOL modernization
Recover business logic from COBOL applications and plan the move to a maintainable target architecture. CORE supports analysis, application engineering, data conversion and testing within the agreed project scope.
IBM i (AS/400) modernization
Understand the applications, business rules and data supporting your IBM i environment. Work with CORE to assess modernization options and plan the engineering, integration and migration work around your business requirements.
PowerHouse migration
Modernize PowerHouse 4GL applications with a team experienced in QUICK, QUIZ, QTP and legacy data structures. CORE recovers application logic and supports migration to modern application and database platforms.
Experience with complex legacy applications
Explore how CORE has worked with organizations to modernize applications and move established systems to new platforms.
Federal Judicial Affairs
PowerHouse and HP-UX applications modernized to Microsoft .NET and SQL Server.
Freightways
Modernization involving PowerHouse, COBOL and an HP e3000 environment.
Ontario healthcare billing
PowerHouse and COBOL modernization to a .NET/WPF application backed by SQL Server.
A structured path from legacy code to go-live readiness
CORE combines design recovery, repository-driven engineering and structured testing. Each stage has agreed outputs and review points with your team.
Assess and plan
Establish scope, priorities, dependencies and the delivery approach.
Recover the design
Document business rules, application structure and data relationships.
Engineer the target solution
Build the agreed application, database and integration changes.
Test and validate
Review behavior, reconcile data and resolve differences against acceptance criteria.
Prepare for go-live
Complete release planning, handover and readiness activities with your team.
Experienced people. Supported by CORE OneTool.
CORE OneTool is the modernization software built by the team behind CORE Migration. Our specialists use its design recovery, repository and forward engineering capabilities, alongside AI-assisted analysis and structured review, to support the agreed modernization work.
Engage CORE Migration for project expertise and delivery. Explore CORE OneTool if you are evaluating the software for your own modernization team.
Questions about working with CORE Migration
Can CORE work alongside our existing team?
Yes. CORE can extend your project team with specialists or work in a blended delivery model with your staff. We agree responsibilities, deliverables and review points before work begins.
Can CORE lead the whole modernization project?
Yes. CORE can lead the agreed scope from assessment and design recovery through application engineering, data conversion, testing and go-live readiness. Your organization provides business input and acceptance decisions throughout the project.
How do you use AI in legacy modernization?
We combine AI-assisted tools with source-code analysis, repository-driven engineering and specialist review. Recovered rules and implementation results are validated through business review and testing against agreed requirements.
Can we start with business rules extraction?
Yes. A focused design recovery and business rules extraction engagement can help document the existing application and inform the next modernization decision.
What is the difference between CORE Migration and CORE OneTool?
CORE Migration provides modernization specialists and project delivery services. CORE OneTool is the software platform built by the CORE team to support modernization work.
Build the right team for your modernization project
Tell us what your application runs on, what needs to change and where your team needs support. We will discuss a practical next step, whether that is assessment, business rules extraction, a blended team or a CORE-led project.