A memorandum, often referred to as a memo, is a written message used for internal communication within an organization. It typically conveys information, updates, or requests and is designed to be clear and concise. Memos are commonly used in businesses, government agencies, and educational institutions to facilitate communication among employees or team members. Memos usually follow a standard format, including a header with the date, recipient, sender, and subject line. They can address various topics, such as policy changes, meeting announcements, or project updates. Memos serve as a formal record of communication and help ensure that important information is documented and easily accessible.