Why Are Businesses Still Relying on AS400 Systems After Decades?
Introduction Technology evolves rapidly, yet some business systems continue to remain relevant for decades. One of the most notable examples is the AS400 system, now commonly known as IBM i. Despite the rise of cloud computing, SaaS platforms, AI-driven automation, and modern enterprise applications, many businesses across industries still depend heavily on AS400 environments to run critical operations. To some, this may seem surprising. After all, AS400 systems were introduced decades ago. However, for many enterprises, these systems continue to deliver stability, reliability, and operational value that newer technologies sometimes struggle to match. The continued reliance on AS400 systems is not simply about resisting modernization. In many cases, organizations continue using them because they support essential business processes, contain decades of operational data, and provide performance levels that remain highly dependable. Understanding why businesses still rely on AS4...