Cloud backup is the practice of automatically transferring copies of your business data to secure, off-site data centers over the internet · eliminating the manual process of managing tapes, external drives, or on-premises backup servers.
The traditional approach · backing up to a local drive and physically transporting it off-site · is operationally fragile. Drives fail. People forget. And a fire, flood, or ransomware attack can destroy both the primary data and the on-site backup simultaneously.
How Cloud Backup Works
A cloud backup agent runs on your servers, workstations, or in your cloud environment. It compresses, encrypts, and transmits changed data to the backup provider's data centers on a schedule you define · typically nightly for full backups, with continuous or hourly incrementals for critical systems.
Modern solutions use deduplication and compression to minimize bandwidth usage and storage costs. Only changed blocks of data are transmitted after the initial full backup, meaning daily backup windows are typically measured in minutes, not hours.
What to Look for in a Cloud Backup Solution
- US-based data centers: For government contractors and regulated industries, data residency requirements often mandate US storage. Verify that your provider's facilities are US-based.
- Independently audited security controls: Look for providers whose security controls have been independently audited under recognized industry frameworks: this verifies controls are not just designed but operating effectively over time.
- Immutable backup storage: Ransomware increasingly targets backup systems. Immutable storage · where backups cannot be deleted or modified for a defined period · is the protection against that attack vector.
- Tested recovery: A backup you've never restored is a backup you don't actually have. Regular recovery testing · at minimum annually, ideally quarterly · is non-negotiable.
- Defined RTOs and RPOs: Recovery Time Objective (how long before you're back online) and Recovery Point Objective (how much data you can afford to lose) should be documented and tested.
Cloud Backup vs. Cloud Storage
These are not the same thing. Dropbox, Google Drive, and OneDrive are cloud storage · they sync files, but if you delete or ransomware-encrypt a file, the deletion or encryption propagates to the cloud copy. Cloud backup maintains versioned, point-in-time snapshots with defined retention policies and recovery workflows. You need both, but they serve different purposes.