A business must recover its application in a second Region within minutes. It already continuously replicates data there. It is willing to pay for a smaller but fully functional copy of the application that runs continuously and is scaled up during a disaster. Which disaster recovery strategy is described?

1. Pilot light, where only core data services are active and the application must still be started.
2. Warm standby, with a reduced-capacity functional application in the recovery Region.
3. Backup and restore, with no application infrastructure running until a disaster.
4. Multi-site active-active, where both Regions continuously serve the production workload at the required capacity.