# Amazon Neptune Documentation

Amazon Neptune is a fast, reliable, fully managed graph database service that makes it easy to build and run applications that work with highly connected datasets. The core of Neptune is a purpose-built, high-performance graph database engine that is optimized for storing billions of relationships and querying the graph with milliseconds of latency. Neptune supports two popular property-graph query languages, Gremlin and openCypher, as well as SPARQL for RDF data. These can help you build queries that efficiently navigate highly connected datasets. You can use Neptune for graph use cases such as recommendation engines, fraud detection, knowledge graphs, drug discovery, and network security.

## User guides

- [Neptune Database User Guide](/neptune/latest/userguide/): Provides an overview of the Amazon Neptune graph database, including instructions for using its features with the Gremlin, openCypher, and SPARQL query languages. It also documents Neptune administrative and data-access API operations.
- [Neptune Analytics User Guide](/neptune-analytics/latest/userguide/what-is-neptune-analytics.html): Provides an overview of the Neptune Analytics graph database, including instructions for using its features with the openCypher query language. It also documents Neptune Analytics administrative and data-access API operations.

## Get started

- [Neptune Database or Neptune Analytics](/neptune-analytics/latest/userguide/what-is-neptune-analytics.html#neptune-analytics-vs-neptune-database): Learn about the differences between Neptune Database and Neptune Analytics, and which is better suited to your use case.
- [The Neptune graph data model](/neptune/latest/userguide/feature-overview-data-model.html): Provides an introduction to the Neptune graph data model.
- [Graph algorithms in Neptune Analytics](/neptune-analytics/latest/userguide/algorithms.html): Provides an introduction to the graph algorithms in Neptune Analytics, with suggestions about how they might be applicable to your use cases.

## References

- [Neptune Database Management API Reference](/neptune/latest/apiref/index.html): Describes the Neptune Database API operations for setting up and managing your graph database infrastructure.
- [Neptune Database Data API Reference](/neptune/latest/data-api/Welcome.html): Describes the Neptune Database API operations for loading, accessing, and maintaining data in a Neptune graph. It includes bulk loading, querying, data inquiry, and machine learning operations.
- [Neptune Analytics API Reference](/neptune-analytics/latest/apiref/index.html): Describes the Neptune Analytics API operations for managing Neptune Analytics infrastructure and data, including loading and querying data.

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