Move Beyond Patchwork Fixes With Purpose-Built Legacy Modernization Services

Our legacy modernization services are organized into five focused categories, each built around a clear goal: removing vendor lock-in, modernizing application architecture, refreshing the digital foundation, migrating legacy data to modern platforms, and exiting niche or fragmented tech stacks. Each category is its own application modernization strategy, built so your team can adopt change at the pace that works for your business.

At Kellton, we take a different approach for Enterprise Software Transformation. Our AI-led legacy modernization services use automated program analysis to de-risk the entire journey, moving you from "Legacy" to a cloud native app modernization framework in record time.

40 %

Cost Reduction: Compared to traditional manual refactoring.

99 %

Logic Accuracy: AI-driven mapping of undocumented dependencies.

We execute our legacy modernization solutions to move you to cloud-native status in 6 months*, not years.

Explore Our Legacy Modernization Services

Our legacy modernization services span five categories, each addressing a different layer of legacy risk — from proprietary languages to data platforms to talent-scarce ecosystems.

Language & Platform Transformation

Goal: remove vendor lock-in from "dead" languages. This category covers moving Progress OpenEdge (ABL, 4GL) to .NET Core, Java, or C#; PowerBuilder to .NET Core with Angular/React; Visual Basic 6 and Classic ASP to .NET Core/ASP.NET Core; and Adobe ColdFusion to Java (Spring Boot), Node.js, or .NET Core. The Progress OpenEdge to .NET Core offering is positioned as a flagship, specialized legacy application modernization solution.

Application Architecture Shift

Goal: move monolithic applications to a flexible, microservices-driven architecture that supports modern AI/ML capabilities. This includes Monolith Decomposition (Java/Spring monolith to Spring Boot microservices and Kubernetes), Mainframe Offloading (DB2/CICS to AWS Aurora or Snowflake), Containerization & DevOps (VMs to Kubernetes with a DevSecOps pipeline), and Desktop-to-Web (WinForms, WPF, Delphi to Blazor, React, or Node.js).

Digital Foundation Updates

Goal: de-risk core applications, ensure compliance, and deliver quick performance gains before larger transformation. This covers .NET Framework 4.x to .NET 8/9 LTS, Java 6/7/8 to Java 21 LTS, SQL Server 2008/2012 to Azure SQL Managed Instance or AWS RDS, and AngularJS/Ember to Angular 17+ or React 18 — a cloud native app modernization track focused on building trust early.

Legacy Data Platform Migration

Goal: enable secure, scalable migration of enterprise data from legacy and on-prem sources to modern cloud-based data platforms. Our Enterprise Data Platform Migration offering moves data from Teradata, MS SQL Server, or existing Snowflake workloads into Snowflake, Azure Synapse Analytics, Azure SQL Database, or modernized MS SQL Server — supporting any source-to-target combination while maintaining data consistency and governance.

Specialized Ecosystem Transition

Goal: move clients away from fragmented or aging stacks to high-velocity, enterprise-standard ecosystems. This includes Niche Stack Pivot (Ruby on Rails, Scala, or Perl to Java/Spring Boot or .NET Core) and PHP Modernization (PHP 5.x, Zend, or CakePHP to Node.js/NestJS or Java) — addressing the talent risk that comes with rare, hard-to-staff languages.

Why Choose Us for Legacy Modernization
Each of our five modernization categories is tied to a specific strategic alignment, so the work we do maps directly to where your business needs it most.

Proprietary De-Risking & Full Stack Capability

Our Language & Platform Transformation category is aligned to removing proprietary lock-in while building long-term, full-stack capability across .NET Core, Java, and Node.js.

Product Engineering & AI/ML

Application Architecture Shift work is aligned to product engineering and AI/ML — breaking monoliths into microservices is described as the prerequisite for applying agentic AI frameworks to specific business functions.

Cloud Engineering & Quality Engineering

Digital Foundation Updates are aligned to cloud engineering and quality engineering, preparing applications for containerization and cloud deployment.

Product Engineering, Data Engineering & Advanced Analytics

Legacy Data Platform Migration is aligned to data engineering and advanced analytics, laying the foundation for AI/ML and data-driven decision-making.

Talent Risk Mitigation & Enterprise Standardization

Specialized Ecosystem Transition is aligned to talent risk mitigation, solving the "missing developer" challenge that comes with niche, boutique tech stacks.

Frequently Asked Questions (FAQs)

What categories of legacy modernization services do you offer?

We offer five categories: Language & Platform Transformation, Application Architecture Shift, Digital Foundation Updates, Legacy Data Platform Migration, and Specialized Ecosystem Transition.

Which legacy language is your flagship modernization offering?

Progress OpenEdge (ABL, 4GL) to .NET Core is positioned as our flagship, specialized legacy application modernization solution.

Can legacy modernization support future AI/ML and agentic AI use?

Yes. Breaking monolithic applications into microservices is described as the prerequisite for applying agentic AI frameworks, and our data platform migration work lays the foundation for AI/ML workloads.

Do you support data migration from legacy data sources?

Yes. Our Legacy Data Platform Migration category moves data from Teradata, MS SQL Server, or existing Snowflake workloads into modern targets like Snowflake, Azure Synapse Analytics, or Azure SQL Database.