This document provides an introduction to business communication, covering key topics such as the definition of business communication, its purpose and importance, types of communication channels and flows, the communication process, and barriers. Business communication involves sharing messages within and outside an organization to carry out its functions. Effective communication allows for stronger decision making, problem solving and relationships. There are various types of communication including oral, written, nonverbal and technological. Messages flow through organizations via formal and informal networks in downward, upward and horizontal directions. The communication process involves a sender, message, receiver and feedback. Potential barriers include cross-cultural differences, lack of trust, information overload and language issues.