| A | B |
| Internal communication – | communication within a business, among its own employees |
| External communication – | communications that goes outside of a business, to existing or potential customers or existing or potential investors |
| Communication plan – | a plan that outlines the message you want to communicate, your audience, and your communication medium |
| Internal | Memos or emails to employees, Employee manual |
| External | Press release, Advertising, Business letters, Customer surveys |
| Directional Communication; Upward | –management |
| Directional Communication; Downward - | subordinates |
| Directional Communication; Lateral - | peers |
| What is your message? | What is it you want to communicate? |
| Who is your audience? | Employees, Customers, Investors |
| What type of correspondence is most effective? | Depends upon message, audience, and purpose |