This document provides an overview of analyzing an organization's external environment. It discusses the basic concepts of opportunities and threats in the external environment. It also describes the characteristics of the external environment as being complex, dynamic, and multi-faceted. The document outlines analyzing the general/macro environment, including economic, technological, social, political/legal factors. Finally, it discusses analyzing the industry/micro environment using Porter's five competitive forces model of new entrants, supplier power, buyer power, substitute threats, and competitive rivalry.