A vertical AS400 history timeline that connects the platform's lineage to today's beginner, training, automation, modernization, and pricing questions.
AS400 history is not just nostalgia or brand trivia. Each platform era explains why IBM i software buying still looks different from generic enterprise software buying today.
Use this timeline as a jump point into the questions buyers ask next ... what the system is, what it is used for, how beginners should learn it, where automation fits, and what the real cost picture looks like.
IBM's System/38 established several ideas that still shape IBM i conversations today ... object-based architecture, an integrated database mindset, and a platform designed around business workloads instead of generic operating-system assembly.
That foundation helps explain why IBM i environments still behave differently from many Windows or Linux stacks when buyers evaluate software, security, recovery, and modernization.
The AS/400 launch turned the midrange lineage into a widely recognized business platform for ERP, finance, distribution, manufacturing, warehousing, and operational reporting. Even now, many people still say AS400 when the current technical name is IBM i.
That naming gap matters in search behavior. Buyers often research AS400, but the software market they are entering is usually branded IBM i or IBM Power.
IBM rebranded the platform through the iSeries and later System i eras, but the business role stayed familiar ... stable transaction processing, deep ERP integration, and long-lived operational workloads.
These branding changes created the vocabulary mix buyers still use now: AS/400, iSeries, System i, and IBM i often point to the same operational lineage, even when the hardware and software generations differ.
IBM i became the modern platform name, but the installed base kept carrying decades of applications, integrations, staffing habits, and business logic forward. That continuity is one reason software decisions on IBM i often emphasize compatibility, recovery confidence, and operational fit over trend-driven feature churn.
For beginners, this is also why learning IBM i means learning both history and current practice at the same time.
Today's buyers are less likely to ask whether the platform exists and more likely to ask what to automate, how to modernize safely, what training a team needs, and how much different software paths will really cost.
That is why current IBM i content needs to connect history to decisions about automation, pricing, cloud, recovery, security, and staffing.
Start with the platform's history, common applications, and why IBM i still matters.
A practical starting path for people learning IBM i now.
Choose the right training model for beginners, admins, and modernization teams.
See how automation software fits once the team understands the platform and the workflow gaps.
Review the full cost picture across hardware, IBM i, software, support, and staffing.
Understand what actually changes the price of HA and continuity software.
Use the history timeline as orientation, then move into the software categories, buyer guides, and articles that answer the practical next-step questions.
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