Spring Data Neo4j is a framework that provides a convenient way to access databases, particularly NoSQL databases. It offers consistent APIs for typical crowd-like operations and executes queries with a very consistent API. The Object-Graph Mapper (OGM) in Spring Data Neo4j 4 allows users to map domain objects to the underlying database without reflection, reducing start-up times. OGM also provides smart object mapping, recognizing and sending only new domain model changes to Neo4j for persistence. This makes the application more performant. The framework offers features such as repositories, custom queries, transactional support, and variable-depth persistence. These features enable users to build applications quickly and efficiently using Spring Data Neo4j 4.1. The example demonstrates how to build a superhero graph with a simplified domain data model using Spring Data Neo4j 4.1. The code includes annotations for node entities, relationships, and rich relationships, as well as repositories and custom queries. The application uses auto-configuration or explicit configuration to set up the Spring Data Neo4j framework. The example showcases how to use Spring Data Neo4j 4.1 to build a graph-based application with a consistent API and efficient data persistence.