In the past, IT managers divided systems into categories based on the user group the system served
Office systems
Operational systems
Decision support systems
Executive information systems
Today, identify a system by its functions and features, rather than by its users
Enterprise computing systems
Transaction processing systems
Business support systems
Knowledge management systems
User productivity systems
Enterprise computing systems
Support company-wide operations and data management requirements
Enterprise resource planning (ERP)
Many hardware and software vendors target the enterprise computing market