Enterprise Resource Planning is a large-scale software program designed for modern businesses. Enterprise resource planning systems are able to give companies an immediate picture of its real-time operations: production, inventory and order processing. ERP software tracks a business’s resources (raw materials, cash, employees), overhead and commitments (employee payroll, purchase orders and customer orders) for individual departments and for the company as a whole. Most ERP systems are modular. Workers can access only the modules they need in order to complete their duties while higher-ups can access all modules in order to both create and review data and reports.