AS400 Application Modernization: Powering Legacy System Operations and Business Growth
Many enterprises still run their mission-critical workloads on legacy AS400 systems that are increasingly difficult to maintain, integrate, and staff. As the pool of RPG/COBOL talent shrinks and modern integration demands grow, these systems become bottlenecks. They limit agility, raise maintenance costs, and create gaps between back-office operations and customer-facing digital experiences. IBM i/AS400 application modernization helps companies address these challenges by transforming aging systems into modern, high-performance platforms that reduce downtime, improve customer satisfaction, and integrate easily with modern business applications.
As an experienced IBM i/AS400 modernization company, we help enterprises revamp their applications or programs built on RPG, COBOL, and other legacy languages. With our iSeries modernization services, businesses can harness the power of cloud computing, mobility, and real-time analytics to optimize their operations, drive informed decision-making, remain agile and adaptable, and gain a competitive advantage. Embrace modernization to open opportunities for growth and sustainable success.

Our AS400 Modernization ServicesPreserving Legacy Value While Driving Digital Transformation
Enterprise Growth Powered by iSeries Modernization Services
AS400 Modernization Consulting
Align the modernization roadmap tailored to the business and process requirements with IBM i consulting.
RPG Modernization
Accelerate modernization at scale from RPG II, RPG III, ILE RPG, Free-form RPG, CL, ILE CL, etc. to modern architectures like JAVA.
Db2 Database Upgrade
Upgrade from older versions of Db2 to Db2 11.5 for improved query performance and seamless data transfer.
AS400 APIfication
Implement future-ready architecture and RESTful APIs on legacy systems to enable faster information exchange with web apps, mobile platforms, and cloud services.
AS400 UI Modernization
Modernize the AS400 user interface to render a new and enhanced look to the existing application, improving user and customer experience.
DevOps on IBM i
Drive DevOps adoption on IBM i with CI/CD pipelines, automated testing, and continuous deployment, bringing agile delivery to your RPG/COBOL codebase.
Enterprise-Ready Capabilities in AS400 Application ModernizationSimplifying Enterprise IT with IBM i Modernization Services
Practical Modernization Strategies from Rehosting to Rearchitecting
We move aging AS400 applications to modern platforms while keeping all functionality intact.
- Transfer applications to cloud platforms without changing business logic
- Migrate to newer IBM i systems with better performance
- Move applications to virtualized environments for cost savings
- Ensure zero downtime during the entire migration process
We rebuild AS400 applications using modern programming methods and better user interfaces.
- Convert 5250 green screen applications to modern web interfaces
- Rewrite old RPG code using current programming standards
- Add new features that weren’t possible with old technology
- Improve application speed and user experience significantly
We redesign AS400 applications to work better with modern business needs.
- Break down large applications into smaller, manageable microservices
- Design applications that can grow with your business
- Create flexible systems that adapt to changing requirements
- Build applications that work well with other modern systems
We update existing AS400 applications to look and work like modern software.
- Replace old-fashioned screens with modern, easy-to-use interfaces
- Add mobile access so users can work from anywhere
- Improve existing features without changing core business functions
- Update user experience to match current software standards
We connect AS400 applications with other business systems and modern technologies.
- Create connections between AS400 and web-based applications using RESTful and SOAP APIs
- Build secure data sharing between different business systems
- Enable mobile apps to access your AS400 business data
- Set up real-time data exchange with cloud services
We update both AS400 applications and data storage for better performance.
- Convert old DDS-described files to SQL-based Db2 database structures
- Create backup and recovery systems that protect information better
- Improve data security with modern encryption and access controls
- Build reporting systems that give you better business insights
Future-Proof Your Legacy Systems with IBM i Modernization
AS400 Modernization SolutionsSolving Real Industry Challenges
Driving Industry Efficiency with AS400 Modernization Expertise

- Replace old patient screens with modern web interfaces
- Connect AS400 systems with new medical equipment automatically
- Add mobile access for doctors and nurses
- Integrate with electronic health record systems seamlessly
- Convert old banking screens to modern customer interfaces
- Connect AS400 with online banking and mobile apps
- Add real-time fraud detection to existing systems
- Integrate with modern payment processing networks safely
- Connect AS400 inventory with online store systems automatically
- Replace old point-of-sale screens with modern interfaces
- Connect with mobile payment and loyalty systems
- Add real-time inventory tracking across all channels
- Connect AS400 with modern factory automation systems
- Replace old production screens with real-time dashboards
- Add mobile access for factory floor workers
- Integrate with modern supply chain management systems
- Connect AS400 with GPS tracking and routing systems
- Replace old dispatch screens with modern interfaces
- Add mobile apps for drivers and customers
- Integrate with modern warehouse management systems automatically
- Connect AS400 with smart meter data collection systems
- Replace old billing screens with customer web portals
- Add mobile apps for field workers
- Integrate with modern grid monitoring and control systems
Our Approach Modernizing AS400 Applications for Competitive Advantage
Infuse a New Life into Legacy Applications with IBM i Modernization
Assessment & Discovery
Our teams use AI-assisted codebase analysis to map complex dependencies and evaluate project scope to create a modernization roadmap.
Modernization Strategy
We recommend the optimal modernization approach, aligning service models with your specific business goals and technical requirements.
Implementation
Our IBM i specialists work with decision-makers to execute the modernization of legacy applications based on your project specifications.
Testing & Validation
We integrate end-to-end workload testing, client feedback, and extensive documentation to keep the modernized system stable and reliable.
Support & Optimization
Post-modernization, we provide monitoring and debugging to ensure hassle-free operations and continuous improvement of your updated systems.
Reimagine Legacy IT with AS400 Modernization
Why Choose Damco as Your IBM i Modernization Company
Transform legacy IBM i applications into agile, future-ready solutions with Damco’s proven modernization expertise

- In-Depth Assessment Assessment of existing IT frameworks, software/hardware dependencies, and user needs for hassle-free IBM i application modernization and optimized TCO.
- Cost-Efficient Support Custom support and flexible engagement models for growth-focused firms: SLA-based, on and offshore teams, fractional or ad-hoc support.
- Diverse Clientele Experienced in supporting clients of all sizes across industry verticals – funded startups, SMBs, ISVs, and enterprise-level organizations.
- Flexible Protection Plans We offer post-modernization IBM i application support to iron out the glitches immediately under our customized, flexible, and affordable plans.
Frequently Asked Questions
Modernizing IBM i/AS400 applications offers several benefits. It makes your systems run faster, strengthens security with up-to-date measures, and helps your legacy systems work smoothly with modern technologies. This upgrade also reduces maintenance costs and improves user experience, keeping your business competitive and agile.
The duration of an application modernization project depends on its scope and complexity, ranging from a few weeks to several months. We follow an agile and collaborative approach to modernize AS400/iSeries applications while maintaining the highest quality standards. Get in touch with our IBM i experts for a ballpark estimate tailored to your project needs.
The cost of modernizing AS400/iSeries applications depends on multiple factors, including business objectives, project scope, workload complexity, engagement model, technology stack, required man-hours, current legacy state, and more. While costs differ from project to project, we focus on delivering the optimal balance between quality and affordability to ensure maximum value and satisfaction.
Indeed, we offer post-modernization consultation services for IBM iSeries applications. We have talented AS400 experts who have rich hands-on experience in redeeming sub-optimal application modernization. We can help you accomplish all your desired goals and business objectives on time and within budget. Contact our modernization consulting IBM i experts with your project requirements.
Our seasoned modernization consultants get in touch with clients to understand their unique business requirements and objectives in detail. Based on the project scope, we offer project proposals with flexible engagement models, such as fixed-price or pay-as-you-go, ensuring alignment with your business goals. Once the contract is signed, our IBM i experts promptly start the modernization of legacy applications, focusing on enhancing performance and scalability while ensuring seamless integration with modern technologies.
Insights That Lead to Impact
Explore Expert Insights Revealing How Modernization Transforms Legacy Systems into Agile, Scalable, and Future-Ready Enterprise Platforms
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