Which service is used for database backups?

ApsaraDB for RDS Backup (RDS Backup) is the dedicated database backup and restoration feature in Alibaba Cloud. It provides automated and manual snapshot backups, binary log backups, and point-in-time recovery (PITR) mechanisms to ensure high availability, data durability, and disaster recovery for relational database instances.

A: Object Storage Service (OSS) stores unstructured files; while backup files can be exported to OSS, it is not the dedicated service managing database backups. C: Elastic Compute Service (ECS) provides virtual server instances, not specialized database backup and log archiving management capabilities. D: Content Delivery Network (CDN) caches and accelerates content distribution to end users globally and cannot perform database backup operations.

- Alibaba Cloud ApsaraDB for RDS Documentation: "Backup and Recovery Overview" (https://www.alibabacloud.com/help/en/rds/apsaradb-for-rds-mysql/user-guide/back-up-an-apsaradb-rds-for-mysql-instance)

- Alibaba Cloud Database Backup Service Documentation: "RDS Backup Management" (https://www.alibabacloud.com/help/en/rds/developer-reference/backup-and-recovery-overview)