A programmer is building a new web application for a client's public cloud infrastructure. The client has requested that the web application stay available even in the event of a regional outage at th

Cloud bursting is a scaling strategy to handle peak loads by extending to a public cloud, not primarily designed for regional outage recovery.

DNS failover, often implemented with a global load balancer or traffic manager, can detect regional outages and automatically redirect user traffic from the failing region's endpoints to healthy endpoints in another geographically separate region, ensuring cross-regional availability.

Clustering typically provides high availability within a single data center or availability zone, but does not inherently protect against a full regional outage.

Autoscaling automatically adjusts compute resources within a region based on demand and does not provide protection against a complete regional outage.