Azure PostgreSQL can utilize additional infrastructure encryption which can add a second layer of encryption at a stage closer to the hardware for protecting data at-rest. For more information on infrastructure encryption within PostgreSQL, see the Azure documentation.
References:
https://learn.microsoft.com/en-us/azure/postgresql/single-server/concepts-infrastructure-double-encryption
At this time, the console UI does not have remediation steps available. For possible CLI remediation, see the product documentation (below) or use Terraform.
In Terraform -
References:
https://learn.microsoft.com/en-us/azure/postgresql/single-server/concepts-infrastructure-double-encryption
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/postgresql_server#infrastructure_encryption_enabled