This document discusses key concepts around communication in organizations. It defines communication as the transfer and understanding of meaning between individuals. Effective communication involves understanding messages that are encoded and decoded properly despite potential noise or barriers. Within organizations, communication serves functions like control, motivation, emotional expression, and sharing information. Formal and informal communication flows can move downward, upward, laterally, and diagonally between individuals and groups. Managing communication challenges in today's digital world and providing strong customer service are also addressed.