CmdID / az / az webapp / az webapp config / az webapp config backup
az webapp config backup update
Configure a new backup schedule for a web app. Azure CLI reference
4 options Its page in the Azure CLI reference
Options
--backup-nameName of the backup.--frequencyHow often to backup.--retain-oneAlways keep one backup, regardless of how old it is--retentionHow many days to keep a backup before automatically deleting it.