All business continuity provisions involve hardware and software redundancy, data replication and some means of failover and failback. The Azure cloud offers redundancy at three layers: within data centers, within regions and across multiple regions. Within data centers, Availability Sets are used to distribute redundant servers across different fault domains located in different racks, which protects against failures at the server and rack levels.
Azure Backup is the Azure-based service you can use to back up (or protect) and restore your data in the Microsoft cloud. Azure Backup replaces your existing on-premises or off-site backup solution with a cloud-based solution that is reliable, secure, and cost-competitive.
Help your business to keep doing business—even during major IT outages. Azure Site Recovery offers ease of deployment, cost effectiveness, and dependability. Deploy replication, failover, and recovery processes through Site Recovery to help keep your applications running during planned and unplanned outages.
Site Recovery is a native disaster recovery as a service (DRaaS), and Microsoft been recognized as a leader in DRaaS based on completeness of vision and ability to execute by Gartner in the 2018 Magic Quadrant for Disaster Recovery as a Service.