A cloud administrator for a customer's environment must ensure the availability of critical applications. The cloud provider hosting the infrastructure lost power, and the environment was down for fou

Installing services at alternate sites describes a disaster recovery strategy, which is more complex and typically used for large-scale regional disasters rather than a localized power outage within a single provider's infrastructure where HA is a more direct solution.

High Availability (HA) mechanisms are specifically designed to keep services operational by automatically failing over to redundant components or nodes within the same or a closely linked environment when a failure occurs. This minimizes downtime by having standby resources ready to take over immediately, directly addressing localized infrastructure failures like power outages.

Moving services to a third-party environment represents a significant architectural migration and is not a practical or immediate solution for ensuring availability during a temporary power outage with the current provider.

Deploying additional services to edge sites is primarily aimed at reducing latency for geographically dispersed users and does not directly ensure continuous application availability during a core infrastructure power outage.