DRaaS – Disaster Recovery as a service. An IT-using organization may have a remote disaster recovery (DR) data center set up to take over when its main data center is hit by a disaster and stops operating. This involve the cost of setting up, equipping and operating the remote center. An alternative is to have it hosted in a public cloud and supplied as a service. This means that the organisation does not need to own the remote data center site and equipment nor recruit and manage the staff there, relying on the service provider instead and, hopefully, saving cost.