This document provides an introduction to business economics. It discusses what economics is about, which is the study of how scarce resources are allocated to satisfy unlimited human wants. It also discusses how economics deals with increasing productive capacity and factors that lead to fluctuations in resource utilization. The document then discusses some key topics in business economics, including decision making, the nature of business economics, its scope, and how microeconomics and macroeconomics are applied to internal/operational issues and external/environmental issues that businesses face.