Enterprise Resource Planning (ERP) systems attempt to integrate several data sources and processes of an organization into a unified system. A typical ERP system will use multiple components of computer software and hardware to achieve the integration.

A key ingredient of most ERP systems is the use of a unified database to store data for the various system modules.

The initials ERP originated as an extension of MRP (material requirements planning then manufacturing resource planning).[2] ERP systems now attempt to cover all basic functions of an enterprise, regardless of the organization’s business or charter.

Non-manufacturing businesses, non-profit organizations and governments now all utilize ERP systems.

To be considered an ERP system, a software package must provide the function of at least two systems. For example, a software package that provides both payroll and accounting functions could technically be considered an ERP software package.

However, the term is typically reserved for larger, more broadly based applications.

The introduction of an ERP system to replace two or more independent applications eliminates the need for external interfaces previously required between systems, and provides additional benefits that range from standardization and lower maintenance (one system instead of two or more) to easier and/or greater reporting capabilities (as all data is typically kept in one database).

Examples of modules in an ERP which formerly would have been stand-alone applications include: Manufacturing, Supply Chain, Financials, Customer Relationship Management (CRM), Human Resources, Warehouse Management and Decision Support System.