Today we have learned about where would i be without IBM. Today, organizations are now looking to modernize AS/400 applications and shift to newer, more open platforms due to the requirement to interact with other newer technologies. In this regard, IBM i AS400 modernization tools and services play an important role in digital modernization. Since they also help you to improve the IBM I application’s performance by decreasing or eliminating the technical debt. IBM I AS400 application modernization services digitally transform your existing AS400 or IBM I applications into a modernized cloud or web-based technology resulting in a low-risk and low-cost way to leverage your investment in IBM I (AS400/iSeries). In this article, we will discuss the concept of IBM i vs. AS400 and the AS400 modernization. Moreover, we will also discuss whether the AS400 is outdated or whether organizations are still using the AS400 applications.