AWS Certified Cloud Practitioner

Explanation

Amazon Neptune is AWS's fully managed graph database service that is specifically designed for graph data models. Here's why it's the correct choice:

• Graph Database: Amazon Neptune is purpose-built for graph databases, supporting both Property Graph and RDF data models
• Scalable: Neptune automatically scales storage and can handle billions of relationships with low latency
• Highly Available: It provides high availability through multi-AZ deployments with automatic failover
• Managed Service: As a fully managed service, it handles patching, backups, and recovery automatically

Why the other options are incorrect:

• Amazon Aurora: A relational database compatible with MySQL and PostgreSQL, not a graph database
• Amazon Redshift: A data warehouse service for analytics and business intelligence, not a graph database
• Amazon DynamoDB: A NoSQL key-value and document database, not specifically designed for graph data

For graph database requirements involving connected data, relationships, and complex queries, Amazon Neptune is the appropriate AWS service.