Which AWS service stores graph data in the form of vertices and edges?

Explanations:

Amazon DynamoDB is a NoSQL database service designed for high scalability and performance. It stores data in key-value and document formats but does not natively support graph data structures like vertices and edges.

Amazon RDS (Relational Database Service) is a managed relational database service that supports SQL-based databases. It is not specifically designed for graph data; instead, it organizes data in tables, making it less suitable for handling graph relationships directly.

Amazon Quantum Ledger Database (Amazon QLDB) is a fully managed ledger database designed for transaction integrity and verifiability. While it supports structured data, it does not specialize in graph data structures like vertices and edges.

Amazon Neptune is a fully managed graph database service that supports both property graph and RDF graph models. It is designed to store and navigate graph data structures, making it ideal for applications requiring relationships between data entities in the form of vertices and edges.