software system. Enterprise Resource Planning concept developed As the majority of JD Edwards's customers were medium-sized companies, clients did not have large-scale software implementations. There was a basic business need for all accounting to be tightly integrated. As McVaney would explain in 2002, integrated systems were created precisely because "you can’t go into a moderate-sized company and just put in a payroll. You have to put in a payroll and job cost, general ledger, inventory, fixed assets and the whole thing. SAP had the same advantage that JD Edwards had because we worked on smaller companies, we were forced to see the whole broad picture." This requirement was relevant to both JDE clients in the US and Europe and their European competitor SAP, whose typical clients were much smaller than the American Fortune 500 firms. McVaney and his company developed what would be called Enterprise Resource Planning (ERP) software in response to that business requirement. World ERP System launched The software ultimately sold was named JD Edwards WorldSoftware, popularly called World. Development began using System/34 and /36 minicomputers, changing course in the mid-1980s to the System/38, later switching to the AS/400 platform when it became available. The company's initial focus was on developing the accounting software needed for their clients. World was server-centric as well as multi-user; the users would access the system using one of several IBM computer terminals or "green-screens". (Later on, users would run terminal emulator software on their personal computers). As an ERP system, World comprised the three basic areas of expertise: functional/business analyst, programmer/software developer, and CNC/system administration. OneWorld ERP System launched By late 1996, JD Edwards delivered to its customers the result of a major corporate initiative: the software was now ported to platform-independent client–server systems. It was branded JD Edwards OneWorld, an entirely new product with a graphical user interface and a distributed computing model replacing the old server-centric model. The architecture JD Edwards had developed for this newer technology, called Configurable Network Computing or CNC, transparently shielded business applications from the servers that ran those same applications, the databases in which the data were stored, and the underlying operating system and hardware. By first quarter 1998, JD Edwards had 26 OneWorld customers and was moving its medium-sized customers to the new client–server flavor of ERP. By second quarter 1998, JDE had 48 customers, and by 2001, the company had more than 600