Vertical Scaling: Change DB instance type and scale storage
Storage and compute changes are applied during maintenance window
You can also choose to “apply-immediately”
RDS would take care of data migration
Takes a few minutes to complete
Scaling limits:
MySQL, MariaDB, Oracle, and PostgreSQL engines - 64 TB
SQL Server - 16 TB
Aurora - 128 TB
RDS also supports storage auto scaling
Horizontal Scaling
Configure Read Replicas
Aurora: Single master - One writer & multiple readers, Multi master
deployment