# Backup copy and immutable backups
## Backup copy (add-on feature)

You have the option to store a copy of your Microsoft 365 EO Backup data in compatible third-party cloud storage. The frequency of backup copy jobs as well as the retention period for backup copies stored in third-party cloud storage can be set according to your business requirement.  Backup copies can be stored in our Cloud Storage or customer-owned Cloud Storage.

## Immutable backups (add-on feature)

Backup copy jobs have the ability to set immutable protection on data stored in compatible third-party cloud storage. Immutability restricts data from deletion or modification for a specific period of time.

*Please raise a support ticket for more information about backup copy, immutable backups and applicable pricing. Alternatively please email *[*sales@eobackup.com*](mailto:sales@eobackup.com)* for more information.*