Which database is known for being a fully managed, proprietary NoSQL service?

DynamoDB is recognized as a fully managed, proprietary NoSQL service provided by Amazon Web Services (AWS). This means that AWS handles much of the database management tasks such as provisioning, patching, backup, and scaling, allowing users to focus on their applications rather than on the underlying database infrastructure.

DynamoDB is designed to handle large amounts of data across distributed systems, providing high availability and performance. Its NoSQL architecture allows for flexible schema designs, enabling developers to store semi-structured or unstructured data effectively. This makes it particularly suitable for applications requiring rapid reading and writing of data without the need for complex SQL queries or relational structure.

The other choices refer to different database technologies, with some being relational rather than NoSQL or not being fully managed in the same way as DynamoDB. For instance, CosmosDB is also a managed NoSQL service, but it is multi-model and offered by Microsoft Azure, distinguishing it from AWS’s proprietary offerings. Aurora is a relational database that is compatible with MySQL and PostgreSQL but is not a NoSQL database. InfluxDB is primarily a time-series database and while it is powerful for specific types of applications, it is not categorized as a fully managed service like DynamoDB.