MARC, which stands for Machine-Readable Cataloging, is a standard format used for the representation and communication of bibliographic and related information in libraries. It allows for the efficient sharing of data among different library systems and facilitates the organization of library collections. MARC records contain fields that describe various aspects of a resource, such as its title, author, publication date, and subject matter. The MARC format is widely used in library catalogs and is essential for the automation of library services. It supports various types of materials, including books, journals, and digital resources. By using MARC, libraries can improve access to their collections and enhance the discovery of information for users.