This document outlines two approaches to studying marketing: the institutional approach and the commodity approach. The institutional approach examines the activities of business organizations and people involved in marketing by identifying various marketing institutions like merchants, agents, and facilitators and analyzing how well they perform marketing functions. The commodity approach focuses analysis on the movement of a product or class of products from production to ultimate consumers as the commodity undergoes changes to meet consumer tastes and preferences. Both approaches are needed to systematically analyze marketing issues, present important aspects of marketing, provide detailed problem analysis, and understand marketing institutions and their performance of functions.