Explanation

Internal communication: within organization (memos, meetings, internal email, notice boards). External communication: with outside parties (letters, invoices, advertisements, press releases).

Written communication provides record but slower. Oral communication is faster but no permanent record. Electronic communication (email, video conferencing) combines speed with documentation.

Effective business communication is: clear, concise, courteous, complete, and correct. Poor communication causes misunderstandings, delays, and lost business. Communication skills are essential for career success.