Disaster recovery as a service (DRaaS)
Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide failover in the event of a man-made or natural catastrophe.
With Disaster Recovery as a Service, the time to return applications to production is reduced because data does not need to be restored from backups, and time is not wasted trying to find or setup replacement servers to run the DR service from. DRaaS can be especially useful for small and medium-sized businesses that lack the necessary resources or expertise to provision, configure and test an effective disaster recovery plan. Using DRaaS also means the organisation doesn't have to invest in -- and maintain - its own off-site DR environment.