This document discusses the types of business communication. It identifies four main types: 1) Internal upward communication which involves information flowing from subordinates to managers, such as through surveys and reports. 2) Internal downward communication where information flows from superiors to subordinates, like through memos. 3) Internal lateral communication between employees of different departments using chats and emails. 4) External communication which shares information outside the organization with vendors, customers, and partners. Effective communication in an organization is essential for meeting goals and achieving success.