A memorandum is a written message used for internal communication within an organization. It typically conveys information, requests, or updates and is often brief and to the point. Memorandums can be used in various settings, including businesses, government agencies, and educational institutions. Memorandums usually follow a specific format, including a header with the date, recipient, sender, and subject line. They may also include a body that outlines the main message and any necessary details. This format helps ensure clarity and facilitates effective communication among team members or departments.