The AS400, or IBM iSeries, is a computing platform that has been a stalwart of business operations for decades. However, in the fast-paced world of technology, where new systems and paradigms emerge constantly, questions naturally arise about the relevance and longevity of legacy systems like the AS400. Is the AS400 outdated, and what is the path forward for organizations that rely on it? In this article, we will delve into the AS400's history, its enduring strengths, and the concept of AS400 modernization.

The AS400: A Brief Overview

The AS400, originally introduced by IBM in 1988 as the AS/400, has a long and storied history in the world of enterprise computing. It was designed to be a versatile and robust platform capable of handling a wide range of business applications. Over the years, it has evolved, rebranded as the IBM iSeries and later as the IBM Power Systems.

One of the key strengths of the AS400 is its unique architecture, the IBM System i, which combines the hardware, operating system (IBM i), and database (IBM DB2) into a single integrated environment. This integration has made it exceptionally reliable and secure, with features like journaling and commitment control ensuring data integrity.

Is the AS400 Outdated?

The question of whether the AS400 is outdated depends on several factors, including an organization's specific needs, budget, and strategic objectives. Here are some points to consider:

1. Legacy Applications: Many organizations still rely on critical legacy applications running on AS400 systems. These applications may be highly specialized, customized, and costly to migrate to modern platforms. For such organizations, the AS400 remains a viable option.
2. Stability and Reliability: The AS400 is renowned for its reliability and uptime. It's not uncommon for AS400 systems to run continuously for years without any issues. For industries where downtime is costly or unacceptable, the AS400's stability is a valuable asset.
3. Security: Security is a top concern in today's digital landscape. The AS400's architecture is inherently secure, with features like object-level security, encryption, and user authentication. This can be a significant advantage in industries like finance and healthcare, which are heavily regulated.
4. Cost of Modernization: Replacing or migrating away from an AS400 system can be a costly endeavor. This includes not only the cost of new hardware and software but also the potential need to redevelop or reconfigure critical applications. For some organizations, the cost of modernization may outweigh the benefits.
5. Skilled Workforce: Another consideration is the availability of skilled AS400 professionals. If an organization has a team of experienced AS400 administrators and developers, it may make sense to continue leveraging the platform rather than transitioning to a new one.

AS400 Modernization: A Path Forward

While the AS400 may still have a place in many organizations, there is a growing trend toward AS400 modernization. This involves updating and optimizing existing AS400 systems to align with modern technology trends and business needs. Here are some strategies for AS400 modernization:

1. Web Enablement: Many AS400 applications were built before the internet era. Modernization efforts often focus on making these applications accessible via web browsers, improving user experience and enabling remote access.
2. Integration with New Technologies: AS400 systems can be integrated with modern technologies like cloud computing, IoT, and AI. This allows organizations to leverage the strengths of the AS400 while taking advantage of new capabilities.
3. Application Rejuvenation: Rather than rewriting entire applications, organizations can choose to rejuvenate them by modernizing the user interface, improving performance, and adding new features.
4. Data Analytics: AS400 systems hold vast amounts of valuable data. Modernization efforts can include extracting and analyzing this data to gain insights and drive data-driven decision-making.
5. Hybrid Approaches: Some organizations opt for a hybrid approach, where they maintain critical AS400 applications while gradually transitioning to new platforms for less mission-critical functions.
6. Training and Skill Development: Investing in training and skill development for existing AS400 professionals can ensure that the platform continues to be used effectively.

Conclusion: The Future of AS400

In conclusion, the AS400 is not necessarily outdated, but its future depends on the unique circumstances and priorities of each organization. For some, the AS400's reliability, security, and familiarity make it a valuable asset that continues to serve their needs. Others may choose AS400 modernization as a way to bridge the gap between legacy systems and modern technology requirements.

Ultimately, the decision regarding the AS400's role in an organization should be based on a thorough assessment of its current and future business requirements. While the AS400 may not be the cutting-edge platform it once was, it still has a place in the modern business landscape, and with the right approach, it can remain a reliable and valuable part of an organization's IT infrastructure for years to come.