You have seen that when we work with EC2 instances, we have to choose the appropriate instance type to support the workload. In regard to EC2, the instance type provides you with the required amount of vCPU, memory, and bandwidth. Likewise, when you work with RDS, you have to choose the appropriate DB instance class. DB instance class also provide you with a choice to select the appropriate amount of vCPU, memory, and network speed. The following is a list of the DB instance classes supported on AWS. This list keep changing, so my advice is to review this one on the AWS website, available at https://aws.amazon.com/rds/details/. Only the Aurora database engine does not support all the DB instance classes. It only supports the r3 and t2 DB instance classes.
