Windows Azure Online Backup is a set of online backups based on cloud technology

Windows Azure Online Backup is a suite of cloud-based, on-line back-up solutions. It allows you to back up files to the data center in the cloud, and he will provide you with more secure and reliable file recovery when local files become corrupted or lost. Microsoft used it as an alternative to local backup solutions. It provides incremental backups of block-level storage (that is, the backup system simply changes the data block's information, which can reduce storage and bandwidth waste), data compression, data encryption and traffic throttling, and cloud data integrity validation.

In the past, you can take advantage of Windows Server Backup to back up your Windows server to an external hard disk or UNC path, and then use the logistics or manual way to take it to a safe place for offsite backup purposes, and now windows Azure Online backup gives you a simple and quick way to back up Windows Server to Windows Azure