Generally available: Azure PostgreSQL backup with long term retention

Azure Backup for PostgreSQL is an elastic-scale, zero-infrastructure solution that does not require you to deploy or manage backup infrastructure, agents, or storage accounts while providing a simple and consistent experience to centrally manage and monitor the backups. Azure Backup for PostgreSQL solution is available in these regions and for these deployments.

Earlier, in preview, we have heard your feedback and introduced a new key-vault based authentication model which will be the preferred model from now on. Also, we have support for archiving your long-term backups to optimize the storage costs. 

Additional resources:
Support matrix
Overview of the solution
Frequently asked questions (FAQ)
Troubleshooting backups
Automation support