What solution would you propose to manage data backup?

A robust data backup strategy combines multiple layers: on‑premises snapshots for quick recovery, incremental or differential backups to reduce storage and bandwidth, and off‑site or cloud replication for disaster recovery. I would use a policy‑driven approach: define retention periods (e.g., 7 days for hot data, 30 days for warm, 365 days for archival), automate the backup schedule with tools like AWS Backup or Azure Backup, and encrypt data at rest and in transit. Regularly test restores to validate integrity, and monitor backup health with alerts for failures or missing snapshots. For critical databases, use point‑in‑time recovery via transaction logs or binlogs, and for file‑based data, employ versioning in object storage (S3 versioning, GCS versioning). Finally, document the backup plan, run periodic audits, and ensure compliance with regulatory requirements.