# Apache ORC > Apache ORC (Optimized Row Columnar) is an open-source, column-oriented data storage format for the Apache Hadoop ecosystem. It provides a highly efficient way to store and query large datasets by using sophisticated compression and indexing techniques. - URL: https://optimly.ai/brand/apache-orc - Slug: apache-orc - BAI Score: 88/100 - Archetype: Incumbent - Category: Data Management Software