This document discusses the roles of brands in aggregating people through strategic and tactical roles. It also covers marketing channels like independent organizations and hybrid channels where a single firm sets up multiple channels. The document discusses retailers' role in building store awareness, promoting private labels, and building loyalty. Retailers argue that disaggregation favors them as they have credibility in assembling brands for customers. Managers must recognize retailers as relationship builders, use targeted communications, and obtain expertise in new products.