Amazon Neptune is a fast, scalable, fully-managed graph database service that makes it easy to build and run applications that work with highly connected datasets. The core of Amazon Neptune is a purpose-built, high-performance graph database engine optimized for storing hundreds of billions of relationships and querying with milliseconds latency, allowing you to easily build queries that efficiently navigate highly connected datasets. Neptune works actively with the Apache TinkerPop Gremlin open-source project. Neptune powers graph use cases such as recommendation engines, fraud detection, knowledge graphs, drug discovery, network security, and many more. Amazon Neptune is built for cloud scalability, durability, availability, and performance.