This document defines and discusses the concept of corporate social responsibility (CSR). It provides several definitions of CSR from different sources that generally portray CSR as operating a business in a socially and environmentally responsible manner that meets ethical standards and stakeholder expectations. The document traces the origins and development of CSR from the 1950s to the present. It also outlines some of the main arguments for why CSR is important for businesses, such as risk management, human resources, and brand differentiation.