The document discusses the importance of internal and external communication for businesses. It notes that businesses rely on communication both within the organization between departments like marketing, HR, finance, and sales, as well as externally with suppliers and customers. Effective communication is important for businesses to exchange information, prepare plans and policies, execute plans and policies by disseminating information to internal and external parties, increase employee efficiency by explaining objectives and policies, achieve goals, solve problems, make decisions, improve industrial relations, publicize goods and services to sell better than competitors, remove controversies, and enhance employee satisfaction and loyalty. Communication is key for businesses to be successful in their activities of buying and selling goods with the intent of making a profit.