Updates optional features and extensions for the instance.

Updates engine parameters to tune performance and behaviour.

Copies snapshots across regions for disaster recovery.

Restores a PostgreSQL instance from a snapshot.

Creates a snapshot for backup and recovery.

Scales storage capacity to meet growth and performance requirements.

Scales compute capacity by modifying the instance class.

Disables Multi Availability Zones when high availability is no longer required.

Enables Multi Availability Zone deployment for high availability and automatic failover.

Promotes a read replica to primary for failover or maintenance.