[joesmo]

Auto scaling in RDS? That'd require a multi-master cluster. As far as I know, that's impossible on RDS, Aurora or not.

[wmfiv]

I should have been more clear. I was referring to storage auto-scaling. Aurora gives you access to up to 64TB of disk billed in 10GB increments. You don't need to preallocate and manage the scaling of your disk as you do with RDS.

[brightball]

Autoscaling of storage at least (up to 64 TB).