The Dagster+ Catalog is a new built-in asset library designed to help data practitioners find and understand specific data assets in large-scale data platforms. Unlike traditional standalone data catalogs, which often fail due to the overhead of running metadata management systems, the Dagster+ Catalog integrates directly into the fabric of the Dagster platform, easing data discovery and documentation issues without adding complexity. The new catalog provides a context-rich view of data assets, allows for data exploration at the column level, and features a flexible organizational system, search UI enhancements, and integration with external assets, ultimately transforming data management with Dagster+.