"without selecting a particular instance type" = serverless

With Aurora Serverless for MySQL, you don't need to select a particular instance type, as the service automatically scales up or down based on the application's needs.

The DBA had one job and he doesn't want to do it... so B it is

without selecting a particular instance type = Amazon Aurora Serverless for MySQL

without selecting a particular instance type = Amazon Aurora Serverless for MySQL

B. Amazon Aurora Serverless for MySQL

What’s the difference between A and B. I think Aurora is serverless, isn’t it?

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https://aws.amazon.com/rds/aurora/serverless/

Amazon Aurora Serverless for MySQL is a fully managed, auto-scaling relational database service that scales up or down automatically based on the application demand. This service provides all the capabilities of Amazon Aurora, such as high availability, durability, and security, without requiring the customer to provision any database instances. With Amazon Aurora Serverless for MySQL, the sales team can enjoy minimal downtime since the database is designed to automatically scale to accommodate the increased traffic. Additionally, the service allows the customer to pay only for the capacity used, making it cost-effective for infrequent access patterns. Amazon RDS for MySQL could also be an option, but it requires the customer to select an instance type, and the database administrator would need to monitor and adjust the instance size manually to accommodate the increasing traffic.

Minimal downtime points directly to Aurora Serverless