This document discusses the key functional areas of business - marketing and sales, supply chain management, accounting and finance, and human resources. It defines business processes as collections of activities that take inputs and create outputs of value to customers. The document differentiates business functions from processes. It explains that enterprise resource planning (ERP) software helps coordinate information across functional areas through a shared database. Each functional area is described in terms of its functions, needed data inputs, and produced outputs to demonstrate how integrated information systems allow effective sharing of data.