Organizational communication involves the transmission of messages between individuals within an organization to achieve individual and shared goals. Messages are shared through face-to-face interactions, written communications, and other mediated channels. The purpose of organizational communication is to build relationships both within the organization and with external stakeholders. There are two primary types of communication in an organization: upward communication from lower to higher levels, and downward communication from higher to lower levels. Effective communication is important for organizational success but also presents challenges like message filtering or distortion.