Migrating or modernizing a legacy system is a high-risk operation. The possibility of affecting critical operations, losing business logic built over decades, or simply dealing with outdated technologies leads many organizations to postpone the inevitable.
If your company has fallen into the legacy trap, you’re probably wondering what the most effective solution is to move toward the future without severing ties with the past. The answer is GeneXus – the software development platform that enables you to tackle the most complex enterprise legacy challenges (applications built in languages like COBOL, RPG, or even Visual FoxPro) and turn them into a competitive advantage, safely and without interrupting operations.
Transforming Legacy Systems with AI
Have you considered that your legacy system could offer AI solutions and agent-based modules built directly on top of its data model? With GeneXus, this is no longer a future aspiration – it’s a tangible reality.
“Thanks to our DBret tool, it’s possible to perform reverse engineering on your legacy system’s tables, allowing you to immediately understand and reuse that critical information already present in your organization. Once this process is complete, we can generate APIs over those tables, opening up a world of possibilities to build, from GeneXus, Agent Objects capable of acting on that data. This means your users will be able to access countless innovative solutions, including the ability to make natural language queries over your legacy systems’ data. All of this is supported by GeneXus technologies and Globant Enterprise AI, which together offer a solid platform to unlock the full hidden potential of your existing information,” explains Luis Murillo, GeneXus Technical Country Manager and expert in Legacy System transformation with GeneXus.
Here are 6 reasons why GeneXus is the best choice for modernizing Legacy Systems:
1. Native Integration with Legacy Environments: Not a Patch, but a Complete Solution
For many companies, legacy software is still the heart of the business. Systems running on IBM System i, old Visual FoxPro applications, batch processes, MQ queues… They’re still operational, and replacing them overnight is simply not feasible.
This is where GeneXus stands out:
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It can generate COBOL and RPG code, allowing new functionalities not only to connect but become a natural part of the legacy system.
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It does not require external layers or forced transformations: it can directly consume legacy databases and execute existing routines.
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It facilitates the creation of modern “wrappers,” exposing old functionalities as REST or SOAP services.
2. Progressive Migration without Interruptions: Risk is Minimized
Forget the “all or nothing” model. GeneXus promotes progressive migration based on the gradual coexistence of the old and the new—a model proven effective in real-world projects. You can check out some success stories from industry-leading companies that chose to modernize their Legacy Systems with GeneXus.
3. Lower Maintenance Costs and Guaranteed Evolution
Legacy systems usually become expensive and hard to maintain over time. But GeneXus offers a different approach: automation based on abstract models.
What does that mean?
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You can change backends or architecture without touching your entire application.
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Technology updates require less effort.
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Technical decisions don’t “mortgage” your future evolution.
The result: a dramatic reduction in Total Cost of Ownership (TCO) and greater agility in the face of change.
4. High Productivity and Low Learning Curve
GeneXus is designed to accelerate projects without relying on large teams or specialists in old technologies.
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Developers don’t need to be experts in COBOL or RPG to build features that interact with those environments.
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The platform automates much of the repetitive work.
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Development tools are designed to be intuitive and adaptable.
This means you can start fast, scale seamlessly, and build teams without spending months on training.
5. And What About Limitations?
In practice, the limitations come from your strategy, not the platform. GeneXus doesn’t force you to adopt a single integration model. You can:
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Migrate in phases.
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Extend specific functionalities.
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Coexist with your legacy system for as long as you need.
And if one day you decide to take a more radical turn – like moving your ERP to the cloud or redesigning the entire interface – GeneXus will support you without needing to start over.
6. Say Goodbye to Your Legacy Systems
With GeneXus, you don’t need to destroy in order to build. GeneXus allows you to evolve intelligently, with minimal impact and maximum value.
While others offer promises, GeneXus delivers continuity – respecting what already works and enhancing it with future-proof technology.
If you want more information about how to integrate GeneXus into your organization or learn about similar cases in your industry, you can write to hello@genexus.com.
You may also be interested in reading:
GeneXus vs Vibe Coding, Knowledge vs Prompting
GeneXus Next: Native Agentic Low-Code Development for Mission-Critical Systems
Creation and In novation in the Age of AI
Low-Code + Generative AI: Challenges and Opportunities for CIOs