Data catalogs are tools or platforms that allow organizations to centralize and manage metadata about their datasets. This metadata includes information such as the title, description, field names, data types, and data sources of a dataset. Data catalogs help users discover, understand, and access relevant data within an organization. They can also facilitate data governance, data quality management, and collaboration among data users. Data catalogs are essential for organizations looking to improve data management practices, enhance data visibility and accessibility, and enable data-driven decision-making.