Which of the following is a fully managed graph database service on AWS?
Amazon Aurora
Amazon FSx
Amazon DynamoDB
Amazon Neptune
Explanations:
Amazon Aurora is a relational database service, not a graph database.
Amazon FSx is a managed file storage service, not a database service.
Amazon DynamoDB is a NoSQL database, but it does not provide native graph database features.
Amazon Neptune is a fully managed graph database service designed for handling graph data.