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IBM i (AS400) continues to power mission-critical operations across manufacturing, distribution, retail, and financial services. As businesses evolve, legacy applications, complex integrations, and limited in-house expertise can slow growth. Our Expert iSeries AS400 Services help organizations modernize applications, enhance RPG systems, integrate with modern technologies, and optimize platform performance ensuring long-term reliability, scalability, and business success.
We combine deep IBM i expertise with modern development, modernization, integration, security, and support capabilities to help organizations maximize the value of their IBM i investments. From legacy RPG applications to cloud-ready architectures, our team delivers end-to-end IBM i services that keep critical business systems reliable, secure, and future-ready.
At SourceMash, our IBM i specialists combine deep platform expertise with decades of experience supporting, developing, modernizing, securing, and integrating business-critical IBM i environments. From legacy RPG applications to cloud-ready architectures, we help organizations maximize the value of their IBM i investments while reducing operational and technology risks.
Insights, studies, and useful advice from our enterprise technology specialists.
Tell us about your business challenge. Our experts will respond within one business day with initial thoughts and next steps.
Everything you need to know before reaching out to us.
Should You Replace Your IBM i or Modernize It Instead?
Choosing between modernization and replacement is one of the most important technology decisions for any IBM i-dependent organization. While modern ERP platforms may appear attractive, they often require rebuilding decades of proven business logic, increasing project cost, complexity, and risk.
For many manufacturers, distributors, and financial services organizations, IBM i modernization delivers a faster path to improved user experience, integration, and scalability while preserving the processes that already work. As part of our Expert iSeries AS400 Services, SourceMash provides independent assessments that evaluate modernization, cloud migration, hybrid architecture, and ERP replacement options to help you make the right long-term decision.
How Can We Manage the Risk of Retiring RPG Developers?
One of the biggest challenges facing IBM i organizations is the loss of institutional knowledge when experienced RPG developers retire. Critical business rules, application dependencies, and operational workflows are often embedded within RPG programs rather than formal documentation.
Our approach combines ongoing IBM i support with structured knowledge transfer and application analysis. By documenting program logic, dependencies, workflows, and business rules, we help organizations preserve critical knowledge, reduce dependency on individuals, and ensure long-term application continuity.
Can IBM i Integrate with Modern Cloud Applications and Platforms?
Absolutely. Modern IBM i environments can integrate seamlessly with platforms such as Salesforce, SAP, Oracle, Microsoft Dynamics 365, Shopify, Power BI, and other cloud applications.
Through REST APIs, web services, middleware, EDI frameworks, and modern integration architectures, IBM i can exchange data in real time with enterprise systems, e-commerce platforms, analytics tools, and customer-facing applications. A well-designed API layer enables IBM i to participate fully in today's connected digital ecosystem.
What Should We Do If We Are Running an Older IBM i Version?
Organizations running unsupported IBM i releases face increased security, compliance, and operational risks. Older environments may no longer receive critical security updates or support from IBM, making upgrade planning an important business priority.
A successful upgrade starts with assessing hardware compatibility, application dependencies, third-party software requirements, and custom RPG environments. Our IBM i specialists help organizations evaluate upgrade readiness, develop migration plans, minimize business disruption, and ensure a smooth transition to supported IBM i versions.
Does Green-Screen Modernization Require Rewriting RPG Applications?
No. In most cases, green-screen modernization can be accomplished without rewriting existing RPG business logic.
Modernization solutions transform traditional 5250 interfaces into browser-based web experiences while preserving the underlying RPG applications. Users benefit from a modern, intuitive interface accessible from desktops, tablets, and mobile devices, while organizations retain the reliability of the business logic that has been refined over many years. This approach delivers a significantly lower-risk alternative to full application replacement.