1. Short History of Business Software (culminating in ERP systems) Phase I – 1955 to 1965  Computers are new and far more expensive than people  Software comes from the hardware manufacturer (bundled) or written in house in FORTRAN or COBOL Phase II – 1965 – 1983  Software ‘unbundled from the manufacturer’  The golden age of software  Great economic justification for applications – stand alone, i.e. payroll, general ledger, inventory control  Most systems and applications separate – the age of the silo  Modular (integrated) systems are leading edge

2. Short History of Business Software (culminating in ERP systems) (2) Phase III – 1983 – 2000  PC networks kill off mini-computers, dominate the field  People now much more expensive than hardware – software development costs skyrocket  ERP systems grow in popularity due to: 1. high development costs 2. high risk of failure for in-house development 3. concentration on “core competencies” Phase IV – 2000 – present  All but strategic systems outsourced or handled internally with commercial ERP software

3. ERP systems defined (for this class) Characteristics of ERP systems  Modular – multiple applications (application =module) from a single vendor can be purchased individually and integrated at any time  Purchased from a vendor, not developed in house  Modules are for common business applications (functions)  Confusingly, stand alone systems (BI, CRM) can also be ERP modules. If built in-house or purchased from specialty software developers rather than from SAP or other ERP vendor - then they are NOT ERP systems. ERP counter examples  The Nevada DMV system is a highly specialized custom written system – not an ERP  Most applications for Financial companies and commercial banks are custom written  Many real estate valuation and sales and insurance programs are custom