Rebuild legacy systems into scalable, cloud-ready platforms without losing core business logic.
Talk to an Expert40%
Faster Time-to-Market
60%
Reduction in Legacy Maintenance Cost
95%
Business Logic Preservation
Near-zero
Downtime Migrations
Modernizing IBM i (AS/400) systems is not just about code conversion. These platforms often carry decades of critical business logic, wrapped in legacy 5250 interfaces, and tightly coupled DB2 for i databases. A single misstep in IBM AS400 modernization can interrupt supply chains, customer billing operations, or compliance workflows. At TestingXperts, our IBM AS400 modernization services help you modernize IBM i applications by restructuring code and decoupling layers. We conduct AI-assisted code analysis, dependency mapping, and impact assessment to accelerate modernization cycles. It prepares your applications for secure integration, scalability, and cloud readiness.
Our IBM iSeries modernization services experts assist you in rebuilding legacy RPG and COBOL systems into modular, API-ready architectures, while maintaining business continuity. Our team executes full-stack modernization across UI, middleware, data access layers, and cloud migration pathways. Every step is backed by controlled rollout strategies, version tracking, automated validation, and rollback safeguards.
TestingXperts refactors monolithic RPG or COBOL code into modular and maintainable services using Java, .NET, or Node.js frameworks. We preserve core business rules while improving scalability and sustainability.
Our experts can decouple 5250 green-screen interfaces and rebuild them using web-native frameworks. The result is a clean, responsive UI that runs in modern browsers without disrupting underlying application workflows. With AI-drive UI Analytics, it is easier to give priority to modernization of user journeys.
We expose existing functions and DB2 for i data through RESTful or SOAP APIs using middleware or custom service layers. This allows seamless connections with your ERPs, CRMs, and cloud-native ecosystems.
TestingXperts restructure IBM DB2 schemas for performance and analytics. We surface data using SQL, ODBC/JDBC connectors, or replication tools that stream it to external systems.
We rehost and replatform AS/400 applications to virtual machines or containers on AWS, Azure, or hybrid cloud infrastructures. Your Core business logic remains intact, while infrastructure becomes elastic, scalable and optimized.
Our experts embed version control, test automation, and rollback safeguards into your structured deployment pipelines. This reduces operational risk, speeds up releases, and ensures your platform stability.
TestingXperts preserves critical business logic while refactoring, using automated code mapping, and validation at each stage of production. With AI-assisted impact analysis, we identify regression risks and ensure controlled cycles.
Our engineers architect every step to support IBM AS/400 cloud migration, containerization, and service-orientated architectures.
TestingXperts deliver IBM AS/400 application modernization through experienced engineers supported by AI-driven analysis, not black-box tools or automated code generators.
We have delivered successful IBM i transformations across regulated industries with complex, high-volume systems. With the help of AI-enabled assessment frameworks, we accelerate modernization planning along with reducing compliance and operational risks.
IBM AS/400/iSeries is an enterprise computing platform used to run critical applications. It offers reliable computing, DB2 for i data management, and enterprise-level functions, ensuring stability for critical business operations.
AS/400 application modernization involves updating legacy IBM AS/400 systems to incorporate modern technologies. This process improves functionality and interfaces and integration of systems with the latest tools and software.
Even if your AS/400 system remains operational, modernization enhances security, improves performance, and prepares your business for future technology needs. It prevents AS/400 system from becoming outdated or inefficient. Partnering with leading AS/400 modernization and migration services experts ensure long-term growth and competitiveness.
If you do not modernize legacy AS/400 applications, you may have to face higher maintenance costs, security vulnerabilities, integration constraints. You will face difficulties integrating your old systems with newer systems, hindering business growth and innovation. Although AS/400 is known for its reliability, the aging factor and inherent limitations can create business and technical debt.
Partnering with the top AS/400 modernization company would provide several business benefits, such as:
Common IBM iSeries support and services strategies for AS/400 modernization include:
Selecting the right modernization approach requires evaluating your application’s code complexity, business objectives, and available resources. This helps determine whether you should go for complete overhaul or incremental updates.
Yes, you can migrate your AS/400 applications to the cloud through different methods, such as rehosting, replatforming or containerization strategies. This offers hybrid-cloud flexibility, scalability, and cost savings while preserving core application functionalities.
Modernizing AS/400 5250 green screens involve creating a user-friendly web interface, typically using modern web technologies like screen scraping, screen re-facing, or API integration. This enhances usability while preserving the functionality of the original AS/400 system.
Integration is possible using governed APIs, middleware orchestration, and other tools that connect AS/400 systems to modern applications, improving interoperability, and ensuring seamless communication between legacy and new platforms.
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