Amazon Aurora

Answer - B.

The AWS Documentation mentions the following:

Amazon Aurora (Aurora) is a fully managed, MySQL- and PostgreSQL-compatible, relational database engine.

It combines the speed and reliability of high-end commercial databases with the simplicity and cost-effectiveness of open-source databases.

It delivers up to five times the throughput of MySQL and up to three times the throughput of PostgreSQL without requiring changes to most of your existing applications.

For more information on AWS Aurora, please refer to the below URL:

The correct answer is B. Aurora.

Amazon Aurora is an AWS-managed relational database service that is fully compatible with MySQL and PostgreSQL, but provides better performance, availability, and scalability. It uses a distributed architecture that can scale out to meet the demands of a growing workload, while also providing fault tolerance and automatic failover.

Aurora provides processing power that is up to 5 times faster than a traditional MySQL database, making it a great choice for applications that require high performance and low latency. Aurora also offers features such as automated backups, point-in-time recovery, and read replicas, which can help improve database availability and reliability.

MariaDB is an open-source database management system that is a fork of MySQL. It is not an AWS-managed service, but it can be used on EC2 instances. PostgreSQL is another open-source relational database management system that is fully supported on AWS, but it is not known for its high performance. DynamoDB is a fully managed NoSQL database service provided by AWS that can scale to support high traffic applications, but it is not a relational database management system and is not comparable to Aurora or other RDBMS services.