AS400, or IBM AS/400, is a midrange server introduced by IBM in the late 1980s, initially as a successor to the System/38. Renowned for its modular hardware design, the platform evolved into the IBM iSeries, offering a versatile and robust computing environment. AS400 operates on the IBM i operating system, featuring integrated databases and support for various programming languages. Its enduring legacy lies in its adaptability, reliability, and seamless integration across diverse applications, making it a stalwart choice in information technology.
Though it emerged in the year 1988, it remains an indispensable force in the ever-changing digital landscape. AS400 is a steadfast ally for businesses seeking stability, reliability, and security in their IT infrastructure.
The article discusses AS400’s evolution, technical intricacies, and significance in the IT landscape along with market landscapes, application types, benefits, challenges, and future outlook.
Inception and Evolution
The AS400, initially launched by IBM in 1988, underwent multiple rebranding until it was officially named IBM Power Systems in 2008. The iSeries, functioning as a server, is dedicated to supporting mission-critical business applications, accommodating various operating systems. Notably, it possesses a distinctive capability to oversee Microsoft Windows through the Integrated xSeries Adapter and Server. IBM i stands as the operating system tailored by IBM for its midrange computer systems, specifically the Power Systems. Its key feature, denoted by the “i,” emphasises seamless integration, distinguishing it in the realm of operating systems.
Succeeding the System/38, it embraced three core concepts: single-level storage, an integrated OS with security and a relational database, and a hardware-independent machine interface. With a transition from a 48-bit CISC processor to a 64-bit RISC-based system in the ’90s.
The OS/400 operating system is object-based, featuring a Relational Data Base Management System (DB2/400) and a menu-driven interface. Recent versions support web-based applications, run on the IBM WebSphere Application Server, and accommodate modern programming languages like Ruby and Python.
AS400, over the years, has evolved its operations and now has emerged as a comprehensive ecosystem, providing businesses with a versatile and robust platform. This great transformation is a significant milestone, where the capabilities are expanded beyond its initial functions, incorporating advancements that align with the evolving needs of businesses. The IBM iSeries became synonymous with adaptability, positioning itself as a technological cornerstone capable of meeting the multifaceted demands of modern enterprises. It operates on a job-oriented system, where jobs are submitted, entered in a queue, and fed into subsystems with various priorities and memory limits.
Unlike Unix’s “everything is a file,” AS/400 operates on the concept of “everything is an object” with built-in persistence and garbage collection. It employs a Unix-like file directory system through the “Integrated File System” and incorporates Java compatibility with a native port of the Java virtual machine.
AS/400 systems are renowned for stability, with urban legends suggesting they continue working behind a brick wall for years. Today, AS400’s legacy lives on in the form of the IBM iSeries—an embodiment of its journey from a revolutionary midrange server to a robust and versatile platform. IBM’s commitment to innovation, adaptability, and providing businesses with the tools they need to thrive in an ever-changing digital landscape.
Understanding the Technical Aspects of AS400
AS400, distinctively redefines computing with its modular hardware design, robust IBM i operating system, and versatile support for programming languages. The transition from CISC to RISC architecture, reflects a commitment to adaptability, setting it apart as a stalwart solution in the dynamic landscape of information technology. In the realms of hardware, software, and operational prowess, AS400 stands distinctly as a trailblaser in the computing realm.
Hardware
The transition from a 48-bit CISC to a 64-bit RISC system in the ’90s brought significant change. The hardware independence, facilitated by a Hardware Abstraction Layer, allows for smooth transitions between different architectures. These features give the prowess of reliability, adaptability, and the ability to meet the evolving demands of modern IT infrastructures.
Modular Design
AS400 adopts a modular design for its hardware, providing businesses with flexibility and scalability. This modular approach allows organisations to customise and expand their infrastructure based on specific requirements.Processor Architecture
AS400 transitioned from a 48-bit CISC (Complex Instruction Set Computing) processor architecture to a more advanced 64-bit RISC (Reduced Instruction Set Computing) design in the 1990s. This evolution enhances processing power and compatibility with contemporary applications.Compatibility
Despite advancements, AS400 hardware maintains compatibility with applications developed on older hardware, ensuring smooth transitions for businesses with legacy systems.Integrated Architecture
AS400’s hardware is designed to work seamlessly with the integrated architecture of the platform. This integration enhances communication between hardware components and the IBM i operating system, contributing to overall system efficiency.Storage Management
AS400 employs advanced storage management techniques, including a single-level storage model. This approach optimises data access and retrieval by moving frequently used content to the fastest memory in single-tier storage, improving system responsiveness.Scalability
The modular nature of AS400 hardware facilitates scalability, allowing businesses to expand their infrastructure as their needs grow. This scalability ensures that AS400 can accommodate increasing workloads and evolving business demands.Adaptability to Emerging Technologies
AS400’s hardware is designed to adapt to emerging technologies, showcasing a commitment to staying relevant in the ever-changing landscape of business computing. This adaptability positions AS400 as a future-proof solution.Security Features
AS400 hardware incorporates robust security features, contributing to the overall secure environment provided by the platform. This is crucial for businesses handling sensitive data and aiming to meet industry compliance standards.Reliability
Businesses that run mission-critical applications that require uninterrupted service rely on AS400 hardware for its reliability.Migration Simplicity
The modular and adaptable design of AS400 hardware streamlines migration processes, enabling businesses to transition their applications and data seamlessly when upgrading to newer hardware. This minimizes disruptions and ensures continuity.
Operating System
AS400 operates on the IBM i operating system, known for its integrated architecture, robust security protocols, and seamless interaction with hardware. Powered by an object-based nature, everything is an object with built-in persistence and garbage collection. it supports a Unix-like file directory system through the Integrated File System, showcasing adaptability.
AS400’s IBM i OS ensures a secure and reliable computing environment, seamlessly integrating with diverse programming languages and reinforcing its enduring relevance in the evolving IT landscape.
The AS400 platform has undergone several name changes for its operating system over the years, reflecting its evolution. Here are the notable names:
OS/400
The original operating system introduced with the AS400 in the late 1980s was known as OS/400. It laid the foundation for the subsequent advancements and capabilities of the platform.i5/OS
In 2000, IBM rebranded the operating system as i5/OS, aligning it with the IBM eServer iSeries hardware. This change marked a shift in naming while maintaining and enhancing the OS’s capabilities.IBM i
In 2006, as part of IBM’s branding initiative, the operating system was rebranded as IBM i. This change reflected a broader strategy to emphasise the integration, versatility, and contemporary nature of the platform.
Database Management
AS400’s database management system, anchored by the native DB2/400, empowers businesses with robust data storage, retrieval, and management capabilities. From ensuring data integrity to supporting sophisticated data warehousing, AS400’s database management plays a pivotal role in the platform’s versatility and reliability.
DB2/400
DB2/400 is the primary and native database management system for AS400. It is a robust relational database that efficiently handles data storage, retrieval, and management. DB2/400 is known for its integration with the overall AS400 ecosystem.SQL (Structured Query Language)
SQL is a standard language for interacting with databases, and it plays a crucial role in database management on AS400. Developers use SQL to create, modify, and query data within the DB2/400 database.Data Integrity Features
AS400’s database management includes robust features for ensuring data integrity. This involves mechanisms such as constraints, triggers, and referential integrity to maintain the accuracy and consistency of data.Journaling
Journaling is a key aspect, providing a way to log changes made to the database. It enhances data security, facilitates recovery processes, and ensures the traceability of database modifications.Data Warehousing Support
AS400’s database management capabilities extend to supporting data warehousing applications. It efficiently organises and manages large volumes of structured and unstructured data, catering to the analytical needs of businesses.Backup and Recovery
Robust backup and recovery mechanisms ensures that in the event of data loss or system failure, organisations can restore their databases to a consistent and reliable state.Stored Procedures
AS400 supports the creation and execution of stored procedures within the database. This enhances efficiency by allowing developers to encapsulate frequently used operations, promoting code reusability and maintainability.Data Encryption
AS400’s database management system incorporates data encryption features to safeguard sensitive information. This is crucial for meeting security and compliance standards, ensuring that confidential data remains protected.Query Optimisation
Database management on AS400 involves query optimisation techniques. The system aims to enhance the performance of database queries, ensuring that data retrieval is efficient, especially in scenarios with large datasets.Database Monitoring and Analysis
AS400 provides tools for monitoring and analysing database performance. This includes features for tracking query execution times, identifying bottlenecks, and optimising the overall performance of the database.Integration with Application Development
The seamless integration of the database management system with AS400’s application development environment ensures that developers can easily interact with and manipulate data within their applications.
Programming Languages
AS400 supports a diverse range of programming languages
RPG (Report Program Generator)
RPG is a widely used programming language on the AS400 platform, known for its structured programming approach, primarily used for developing business applications, including those for finance, manufacturing, and logistics.CL (Control Language)
CL is an integral part of AS400 programming, serving as a command language. It is used for scripting and automating tasks, making it a vital component in the overall management and operation of AS400 systems.Java
AS400 supports Java programming, offering developers the flexibility to create cross-platform applications. Java’s portability and versatility make it a preferred choice for developing interactive and dynamic applications on the AS400.SQL (Structured Query Language)
SQL is a standard language for managing and manipulating databases. AS400 supports SQL for database operations, enabling developers to create, retrieve, update, and delete records in the DB2/400 database.COBOL (Common Business Oriented Language)
COBOL, a language with a long history in business applications, is supported on AS400. It is often used for developing applications related to finance, payroll, and other business processes.C/C++
AS400 supports C and C++ programming languages, providing low-level programming capabilities. This is advantageous for developers who need closer control over system resources and performance.Python
Python is gaining popularity on the AS400 platform for its simplicity and readability. Developers use Python for a variety of applications, including scripting, web development, and data analysis.OpenRPG
OpenRPG is an open-source version of RPG, offering modern features and enhanced capabilities. It allows developers to leverage RPG programming concepts while incorporating contemporary practices.PHP
PHP, a server-side scripting language, is supported on AS400 for web development. Developers use PHP to create dynamic and interactive web applications, connecting seamlessly with AS400 databases.JavaScript
JavaScript, known for enhancing the interactivity of web pages, can be integrated into AS400 applications for front-end development. This allows for the creation of dynamic and user-friendly interfaces.Shell Scripting (BASH)
Shell scripting, often done using BASH (Bourne Again SHell), is employed for automating tasks and scripting processes on AS400. It enhances the system’s functionality through automated workflows.
Types of Applications
AS400 exhibits versatility by supporting various applications tailored to diverse business needs.
ERP Solutions
AS400 plays a pivotal role in facilitating efficient Enterprise Resource Planning (ERP) solutions. These applications streamline various business processes, including finance, human resources, and supply chain management, enhancing overall organisational efficiency.Transaction Processing
AS400 excels in handling high-volume transaction processing. Whether it’s processing sales transactions, managing inventory updates, or handling financial transactions, AS400 applications ensure data integrity and reliability.Data Warehousing
AS400’s robust database system makes it well-suited for data warehousing applications. These applications involve the collection, storage, and retrieval of large volumes of structured and unstructured data for analytical purposes.Customer Relationship Management (CRM)
AS400 supports CRM applications that focus on managing interactions with customers and potential customers. These applications often include features for sales automation, customer service, and marketing campaign management.Business Intelligence (BI) and Reporting
AS400 applications are widely used for Business Intelligence (BI) and reporting purposes. They enable businesses to gather insights from their data, create comprehensive reports, and make informed strategic decisions.Supply Chain Management
AS400 applications contribute to efficient supply chain management by coordinating and optimising the flow of goods, services, and information. This includes inventory management, order processing, and logistics coordination.Healthcare Management Systems
In the healthcare industry, AS400 applications are employed for managing patient records, scheduling appointments, and handling billing and insurance information. These systems contribute to the smooth operation of healthcare facilities.Manufacturing Execution Systems (MES)
Manufacturing Execution Systems to monitor and control manufacturing operations on the shop floor that includes tracking production, managing resources, and ensuring product quality utilizes AS400 applications.E-commerce and Online Retail
AS400 supports applications related to e-commerce and online retail, handling tasks such as online transactions, order processing, and inventory management for businesses operating in the digital marketplace.Document Management Systems
AS400 applications are employed for document management, organising, storing, and retrieving documents efficiently. This is crucial for businesses that deal with a large volume of documents and need streamlined document-handling processes.Custom Line of Business (LOB) Applications
Many organisations develop custom Line of Business applications on AS400 tailored to their specific industry needs. These could include specialised tools for finance, manufacturing, or other industry-specific processes.
Important Characteristics of AS400
The AS/400, now part of IBM Power Systems, is renowned for its integrated architecture, reliability, and security. Offering a robust operating system, advanced database management, and unparalleled scalability, it remains a cornerstone in enterprise computing.
Let us delve deep into various aspects that define the intricacies of AS400:
Integrated File System (IFS)
The AS/400 includes an Integrated File System, a hierarchical file system that unifies the storage of various types of objects, such as files, directories, and programs. This enables seamless integration between traditional AS/400 objects and distributed file systems.Journaling
AS/400 incorporates journaling, a feature that logs changes to files and objects in real time. This journaling capability supports data integrity, auditing, and disaster recovery by providing a record of changes made to the system.Single-Level Storage
AS/400’s single-level storage architecture abstracts the physical location of data from the application. This simplifies memory management for developers, as they do not need to worry about addressing details, allowing for more straightforward and efficient programming.Advanced Job Scheduler
The AS/400 includes a powerful job scheduler that enables the automation of tasks and processes. This scheduler can be used to automate routine operations, batch processing, and other tasks, enhancing system efficiency.Query Management Facility (QMF)
QMF is a tool provided by AS/400 for creating and executing SQL queries. It allows users to extract and analyse data from the system’s DB2 database easily. QMF is particularly useful for generating reports and extracting business intelligence.High-Level Language Support
AS/400 supports multiple high-level programming languages, including RPG, COBOL, C, and Java. This language diversity allows developers to choose the most suitable language for their applications, promoting flexibility and compatibility.Remote Database Access
AS/400 supports remote database access, enabling applications running on other systems to interact with the AS/400’s DB2 database. This is crucial for distributed computing environments where data needs to be shared across different platforms.WebSphere Application Server
IBM WebSphere Application Server is often used in conjunction with AS/400 to deploy and manage web applications. This middleware facilitates the development and deployment of web-based solutions, extending the capabilities of AS/400 into the web environment.High Availability (HA) Solutions
AS/400 offers various high-availability solutions, such as clustering, replication, and geographic mirroring, to ensure business continuity in case of hardware failures or disasters. These solutions are designed to minimise downtime and data loss.DB2 Multisystem Support
AS/400’s DB2 database supports multisystem configurations, allowing data to be shared and accessed seamlessly across multiple AS/400 systems. This is especially valuable in large enterprises with distributed computing environments.Integrated Development Environment (IDE)
AS/400 provides a comprehensive Integrated Development Environment, often referred to as SEU (Source Entry Utility), which facilitates the development, maintenance, and debugging of applications. Developers can work within a unified environment, streamlining the development process.TCP/IP Integration
AS/400 has robust support for TCP/IP, enabling seamless integration with the internet and other networked systems. This is essential for modernising applications, enabling e-commerce, and facilitating communication in a connected world.
Advantages of AS400
The AS/400, now part of IBM Power Systems, offers several advantages that have contributed to its enduring relevance in enterprise computing:
Integrated Architecture
AS/400’s integrated architecture simplifies system management by combining hardware, software, and operating system components into a unified environment. This integration enhances overall efficiency and reduces complexity.Reliability and Availability
AS/400 systems are known for their high reliability and availability. Features such as hardware redundancy, error detection, and correction mechanisms contribute to minimising downtime and ensuring continuous operation.Security Features
AS/400 systems have robust security features, including user authentication, authorisation controls, and auditing capabilities. The security model is integral to the system’s design, providing a secure computing environment for sensitive data and applications.Object-Based System
The AS/400’s object-based system treats everything in the system, including data, programs, and devices, as objects. This object-oriented approach simplifies development and maintenance, fostering a more intuitive and flexible programming environment.Scalability
AS/400 systems are scalable, allowing organisations to expand their computing resources as needed. This scalability supports both vertical growth (adding more resources to a single system) and horizontal growth (connecting multiple systems).IBM i Operating System
The IBM i operating system, running on AS/400, is known for its stability and ease of use. It supports multiple programming languages, including RPG, COBOL, Java, and others, providing flexibility for application development.Database Integration (DB2 for i)
AS/400 includes a built-in relational database management system (DB2 for i) that seamlessly integrates with the operating system. This simplifies data management and supports efficient storage and retrieval of information.Legacy Compatibility
AS/400 systems maintain a high degree of backward compatibility, allowing organisations to run legacy applications developed for earlier versions. This characteristic ensures the longevity of AS/400 installations and protects investments in existing software.Green-Screen Interface Efficiency
While modern interfaces have been introduced, the traditional green-screen interface (5250 emulation) remains efficient for certain tasks. Users familiar with this interface often appreciate its simplicity and speed for data entry and basic functions.Middleware and Connectivity
AS/400 supports various middleware and connectivity options, facilitating integration with other systems and technologies. This includes support for web services, messaging, and seamless integration with enterprise resource planning (ERP) systems.Advanced Job Scheduler
The AS/400’s advanced job scheduler enables the automation of tasks and processes, enhancing operational efficiency by streamlining routine operations and batch processing.Single-Level Storage
AS/400’s single-level storage architecture simplifies memory management for developers by abstracting the physical location of data from applications. This contributes to more straightforward and efficient programming.
Mapping the Present Vs Future of AS400
The future of IBM iSeries systems appears promising, with a strategic roadmap, ongoing innovations, and a commitment to support. As businesses contemplate their technological evolution, the iSeries systems stand as a reliable partner, ready to navigate the challenges and opportunities that lie ahead.
In the ever-evolving landscape of information technology, the AS400 has not merely weathered the storms of change but has proven its mettle by adapting and transforming. From its historical roots to its current incarnation as IBM Power Systems, the journey of AS400 reflects not just a technological evolution but a commitment to relevance and sustainability.
Market Share
Enlyft, a provider of technographic and firmographic data for businesses, offers insights into 52,972 companies utilising IBM AS/400. Predominantly located in the United States and operating within the Information Technology and Services sector, followed by Italy, France, UK, Canada, India, and Germany. These companies typically fall within the 50-200 employees’ range with revenue ranging from 10M to 50M dollars.
By using cutting-edge indexing techniques and advanced data science to monitor the market share of over 15,000 technology products, IBM AS/400 stands out with an impressive market share of about 40.8%. This dominance positions IBM AS/400 as a leading player in the market, surpassing other major and competing products in this category.
Among several industries that use IBM AS/400, Technology and Services 11%, and Computer Software 5% followed by retail, healthcare, transport, automotive, machinery, food and construction.
Modernising AS400 Applications holds 33%
A significant portion of customers, accounting for 33%, is actively involved in the modernisation of their AS400 applications. This likely includes efforts to enhance user interfaces, improve functionality, and ensure compatibility with contemporary technologies.SQL Database Access holds 18%
For 18% of AS400 iSeries customers, prioritising SQL database access indicates a shift towards leveraging more standard and versatile database management, potentially streamlining data retrieval and manipulation processes.High Availability captures 17%
With 17% of IBM i customers focusing on high availability, there is a concerted effort to minimise downtime and ensure continuous operations. This involves implementing robust backup and recovery solutions and establishing failover mechanisms.Enhancing Data Safety holds 15%
15% of customers recognise the paramount importance of data safety. This likely involves implementing advanced security measures, encryption protocols, and redundancy strategies to safeguard critical business data.Business Analytics Beyond Query/400 holds 11%
An 11% segment is dedicated to advancing business analytics capabilities beyond the traditional Query/400. This may involve adopting more sophisticated analytics tools, exploring machine learning applications, or implementing advanced reporting mechanisms.Integration of AS400 Business Applications holding 4%
4% of customers are specifically focusing on integrating their AS400 business applications. This effort aims to enhance overall operational efficiency, streamline processes, and ensure seamless communication between different applications.Document Management accounts for 2%
Document management is a priority for 2% of customers, indicating a need for organised and efficient handling of data, particularly in the face of data growth. This might involve implementing document storage systems, version control, and retrieval protocols.Mobile Accessibility
Some customers are recognising the growing trend of mobile accessibility. This involves adapting AS400 applications to be accessible and functional on mobile devices, reflecting the evolving needs of industries for on-the-go solutions.
Current scenario of AS400:
In 2024, AS/400 is still relevant and continues to hold a prominent position in the enterprise computing landscape, showcasing adaptability and resilience. The platform has undergone several transformations to align with contemporary technological trends, ensuring its relevance in the ever-evolving IT industry. Here’s a detailed overview of the current scenario:
Integration with Cloud Computing
One of the significant trends in the current scenario is the platform’s integration with cloud computing. AS/400 systems now support cloud platforms such as Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), and others. This integration facilitates scalable and flexible computing, allowing organizations to leverage cloud benefits.Modern Development Tools and Open-Source Adoption
The 2010s witnessed a notable expansion of AS/400 capabilities. The platform embraced modern development tools, catering to contemporary software development practices. Furthermore, there has been a significant push toward open-source technologies, with the adoption of open-source RPG and modernization frameworks. This has enhanced the platform’s agility and compatibility with a broader range of applications.Security Enhancements
As cybersecurity threats continue to evolve, the IBM iSeries has proactively enhanced its security features. The platform’s security measures have been reinforced to address modern challenges, ensuring the protection of critical business data. This focus on security is crucial in an era where data breaches and cyberattacks pose substantial risks.AI and DevOps Integration
In the 2020s, the IBM iSeries has embraced artificial intelligence (AI), machine learning (ML), and DevOps practices. The integration of AI and ML tools enhances the platform’s analytical capabilities, providing organizations with valuable insights from their data. DevOps integration ensures smoother collaboration between development and operations teams, promoting agility and efficient software delivery.Community Engagement and Support
IBM continues to actively engage with the AS/400 community. The platform enjoys support from a dedicated user base and IBM’s ongoing commitment to advancements. Training programs, modernization tools, and community collaboration are key aspects of IBM’s strategy to sustain and grow the AS/400 ecosystem.
Future of AS400
The capabilities and relevance of AS/400 have fuelled several industries to adopt, ensuring a resilient and future-ready computing infrastructure. As technological landscapes evolve, AS/400 continues to stand out for its robustness, security, and adaptability, positioning itself as a strategic choice for businesses aiming to navigate the complexities of the digital era.
Continued Modernisation and Integration
The future of AS/400 (IBM iSeries) involves a continued focus on modernisation to adapt to changing technological landscapes. Integration with emerging technologies, cloud services, and modern development practices is expected to be a key aspect. IBM has historically shown a commitment to keeping its platforms relevant through updates and enhancements.Cloud Adoption
Given the industry-wide trend, AS/400 may continue its journey into cloud computing. Integration with various cloud platforms allows businesses to take advantage of scalability, flexibility, and the latest cloud services. This could involve both on-premises and hybrid cloud solutions.Security Enhancements
With the ever-growing threat landscape, security will remain a top priority. Future versions of AS/400 may introduce advanced security features to protect against evolving cyber threats. This could involve improvements in encryption, access controls, and overall system resilience.Community Support and Training
Ensuring a skilled workforce is crucial for the continued success of AS/400. IBM may invest in training programs and resources to support the AS/400 community. This includes educating developers and administrators on modern practices and technologies.User Interface and User Experience
The user interface and overall user experience will augment to align with modern design principles. This could involve updates to the graphical interface, making it more intuitive and user-friendly.Flexibility and Adaptability
The ability to adapt to changing business requirements and technology landscapes will be a hallmark of the AS/400’s future. Ongoing flexibility in terms of application development, data management, and system scalability will bring elevated development in the technical spheres.IBM iSeries Future Products
The recent release, IBMi 7.4, marked a significant milestone, introducing features like the IBM Db2 mirror for i, bolstering the system’s capability for non-stop application availability. Looking forward, IBM hints at the upcoming “IBMi Next” and “IBMi Next+1,” promising a continuous journey of innovation.10-Year Support Strategy
The second part of the support strategy revolves around a 10-year plan, offering clients foresight into future releases and support durations. For instance, following the “7+3” support strategy, IBMi 7.4, launched in 2019, is projected to receive support until 2029.
Conclusion
AS400, now evolved into IBM Power Systems, stands as a resilient computing platform that has adapted to evolving business needs since its inception in the late 1980s. The fascinating key milestones, technological shifts, and a commitment to relevance have made a significant shift. The platform’s modular hardware, scalable design, and compatibility underscore its thoughtful approach to diverse computing requirements.
It is important to note that, AS400’s support for various programming languages and adaptability to emerging technologies positions it as a versatile solution for diverse applications. Also, marketwise, it maintains a significant share across several industries.
While facing challenges like legacy perceptions, AS400’s enduring significance and ongoing modernisation efforts make it a viable and future-proof choice. In the dynamic tech landscape, the AS400’s journey is a testament to its ability to thrive, offering businesses a dependable and forward-looking computing solution. This exploration concludes with AS400 remaining a compelling chapter in the ongoing narrative of technological evolution, promising stability, and security for those embracing its rich history and innovative potential.
