Neo4j is a powerful graph database management system that stores data in the form of nodes and relationships, distinguishing it from traditional relational databases that utilize tables. Its native graph storage and scalable architecture optimize performance, particularly for complex queries involving relationships. Neo4j is ACID compliant, ensuring data integrity and reliability. It employs the Cypher query language, which is similar to SQL, allowing users to perform both simple and intricate queries efficiently. With a user-friendly interface and a robust community, Neo4j is widely used for applications such as social networks, recommendation systems, and fraud detection.