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Aurora
Fully managed relational database Cluster that combines the speed and availability of high-end databases with the simplicity and cost-effectiveness of open-source databases. supports both mySQL and postgres compatible engines 1/10th the costs of other solutions and has better performance.
Scaling
Durability and Fault Tolerance: backup and failover are handled automatically snapshots
Storage is self healing, in that data blocks and disks are coninously scanned for errors and repaired automatically.
Availability: deploys to minimum 3 availability zones, each contain 2 copies of the data at all times → 6 copies total. lose up to 2 copies of data without affecting write availability. or 3 without read availability.
Aurora Provisioned
Aurora Serverless Provisioned is the dfault compute config for aurora clusters. contains a primary DB instance and optionally up to 15 replicas
manual scaling
Aurora Serverless V2
fully manages the autoscaling configuration (does not scale to zero tho)
Aurora Global Database
is an Aurora database spanning multiple regions for globel low-latency and high availability.
Has a primary cluster in 1 region. up to 5 seconday DB clusters in different regions Writes on primary cluster replicated to other clusters only available in specific regions and database versions