1-3: The Evolution of Marketing Barter Productio Sales Marketing Marketing Era Era E Department Company ra E ra Self- Demand Supply Era Supply Sufficiency exceeds equals Supply exceeds supply deman equals demand Basic demand one-on-one Output Selling Integrated trading d expande process Marketing comprehansive Important a subsidiar function role for marketing IBUS 166 CULTURE Lars pemer. Instructor 3IBUS 166 CULTURE Lars Perner, Instructor 3 1-3: The Evolution of Marketing Barter Era Self￾Sufficiency Basic one-on-one trading Marketing Company Era Supply exceeds demand Integrated, compreeansive role for marketing Marketing Department Era Supply equals demand Marketing a subsidiary function Sales Era Supply equals demand Selling process important Productio Era Demand exceeds supply Output expanded