Business Communication is very much important in survival of business. Since your question is placed in Education and Subjects category, I would be focusing of its importance and advantages as subject.
As a subject, Business Communication helps you understand how to verbally and Non-Verbally communicate in Business environment. It tells you of formats used in verbal and oral communications in organizations. Depending on your course pack, Business communication now also focuses on in-depth studies of inter-personal, intra-personal and inter-cultural communication which helps you understand the behaviors and attitude of people and thus communicating message effectively becomes more easy.
As a subject, Business Communication helps you understand how to verbally and Non-Verbally communicate in Business environment. It tells you of formats used in verbal and oral communications in organizations. Depending on your course pack, Business communication now also focuses on in-depth studies of inter-personal, intra-personal and inter-cultural communication which helps you understand the behaviors and attitude of people and thus communicating message effectively becomes more easy.