Aurora VS RDS

	RDS	Aurora
instance class
storage volume	gp2/gp3/io1/magnetic	managed
scaling	enable/disable	automatically enable
Multi AZ	Multi AZ is available	Both Multi AZ DB instances and Multi AZ DB cluster are available
DevOps Guru	only available to Postgres	available
Automatic backup	available	automatically enable
maximum days to store backup data	0-35 days	1-35 days
Objective time when db Failover	within 60 ~ 120 seconds	within 30 seconds
RPO	up to 5 minutes	up to 5 minutes
Precedence when db failover	not available	available
Back truck	not available	available

Aurora VS Document DB

	Aurora	Document DB
instance class
storage volume	max 128 TiB or 64 TiB depending on the DB engine version by 10 GiB	max 64GiB by 10GiB
storage availability	a six-way quorum spread across three AZs	Same as Aurora
	with a write set of four and a read set of three
Cluster	One primary instance with 0 to 15 read replicas	Same as Aurora
Precedence when db failover
Kinds of endpoints
secured connection	Username/password or IAM	Username/password
Pass audit logs	CloudWatch Logs export	CloudWatch Logs export
	andserver_audit_logging in parameter group	andaudit_logs in parameter group
Price	pay-as-you-go for DB instance, storage, backup storage, transmission of data	Same as Aurora