Distribute EC2 instances across different AWS Regions, implement Route 53 health checks for traffic redirection, and enable Aurora PostgreSQL Cross-Region Replication.

Expand the Auto Scaling group to multiple Availability Zones, configure the database in Multi-AZ mode, and integrate an Amazon RDS Proxy for the database.

Maintain the Auto Scaling group in a single Availability Zone, create hourly database snapshots, and establish a recovery process from these snapshots upon failure.

Deploy the Auto Scaling group across multiple AWS Regions, store application data in Amazon S3, and use S3 Event Notifications to invoke an AWS Lambda function for database data entry.