In the ever-evolving landscape of technology, businesses are constantly seeking ways to modernize and streamline their operations. One significant step in this journey is migrating away from legacy systems, like the AS400, towards more modern and efficient solutions. AS400 migration, also known as IBM i migration, involves the process of transitioning from the AS400 platform to a newer system. In this blog, we’ll explore what AS400 migration is and how to approach it, ensuring a seamless transition for your business.

What is AS400 Migration?

The IBM i, previously recognized as AS400, stands as a reliable and robust system, rendering years of outstanding service to various enterprises. Nevertheless, it is not invulnerable to the imperatives of technological advancement. The procedure of relocating your corporate procedures, applications, and data from the AS400 platform to a more up-to-date environment is denoted as AS400 migration. This may entail switching to more scalable, performant, and flexible platforms such as cloud-based software, contemporary hardware, or other systems.

AS400 Migration Challenges:

Legacy Code and Dependencies: Legacy AS400 applications may have dependencies on outdated programming languages and frameworks. Rewriting or refactoring these applications to function on a new platform can be a significant challenge, as it requires a deep understanding of the existing code and the ability to adapt it to modern programming paradigms.

Data Mapping and Transformation: Data stored in AS400 databases may not seamlessly align with the data structures of the new platform. Data mapping and transformation can be a complex task, requiring careful planning and execution to ensure data integrity and accuracy during and after the migration.

Downtime and Business Continuity: Minimizing downtime during migration is crucial for businesses. A major challenge is to maintain business continuity while transitioning from AS400 to a new platform. Careful planning and coordination are necessary to ensure that critical processes are not disrupted during the migration.

Compatibility and Integration: Ensuring that the new platform integrates seamlessly with other systems and applications in your organization can be challenging. Compatibility issues may arise, requiring adjustments and additional development work to establish effective connections between systems.

Cost Management: AS400 migration can be costly, and managing the budget is a challenge. Organizations must carefully estimate and control expenses related to hardware, software, training, and consulting services to prevent unexpected cost overruns.

How to Approach AS400 Migration?

Check Your Current State:

Start by conducting a thorough assessment of your current AS400 environment. This includes understanding your hardware, software, and the specific applications that rely on the AS400.

Define Your Goals:

Clearly define your objectives for the migration. What do you hope to achieve by moving away from AS400? Common goals include cost reduction, improved performance, increased scalability, and access to modern technologies.

Choose the Right Platform:

Select a platform that aligns with the aims and prerequisites of your enterprise. This might encompass a virtualized framework, a cloud-centric resolution, or a fusion of technological modalities. Evaluate factors such as security, scalability, and ongoing support.

Data Migration:

The heart of any AS400 migration is the data. Plan and execute a comprehensive data migration strategy to ensure that all your critical information is securely transferred to the new system.

Testing and Validation:

Rigorously test the new environment to identify and address any potential issues before going live. This will help minimize disruptions to your business.


A crucial initial move for businesses hoping to maintain their competitiveness in the modern digital environment is AS400 migration. You can guarantee a successful migration by thoroughly evaluating your current situation, setting specific goals, and adhering to a methodical plan. Your company can benefit from better performance, more flexibility, and a more promising future in the contemporary technological world with proper planning and execution. Accept the shift, and you’ll see your company prosper in the digital era.How Should Businesses Approach AS400 Migration Successfully?