All technological notes.
AuroraPostgres and MySQL are both supported as Aurora DB (that means your drivers will work as if Aurora was a Postgres or MySQL database)
One Writer Endpoint (DNS name)
One Reader Endpoint

Aurora Replica
Define a subset of Aurora Instances as a Custom Endpoint
The Reader Endpoint is generally not used after defining Custom Endpoints
Can set up multiple custom endpoints for different workload.

Automated backups
point-in-time recovery in that timeframeManual DB Snapshots
Restoring a Aurora backup or a snapshot creates a new database
Restoring MySQL Aurora cluster from S3

Aurora Serverless
Aurora Multi-MasterIn case you want continuous write availability for the writer nodes
Multi-Master vs Normal Aurora cluster
Multi-Master:
Normal Aurora Cluster:

Global Aurora (Cross Region)Cross Region Read Replicas:
Global Database (recommended):

Aurora Machine LearningAurora and AWS ML servicesSageMaker (use with any ML model)Comprehend (for sentiment analysis)
Aurora Database Cloning