Storing your data locally can impose security and availability risks. Major cloud providers have object storage services available to allow you to upload and distribute data across different regions using various retention and restore policies. Percona XtraBackup delivers the xbcloud binary  an auxiliary tool to allow users to upload backups to different cloud providers [&]

https://www.percona.com/blog/introducing-xbcloud-exponential-backoff-feature-in-percona-xtrabackup/