What feature improves the reliability of applications hosted on OCI?

High Availability Architecture plays a crucial role in improving the reliability of applications hosted on Oracle Cloud Infrastructure (OCI). This feature is designed to ensure that applications remain operational and accessible, even in the event of failures or disruptions. By distributing resources across multiple availability domains and fault domains, High Availability Architecture minimizes the impact of localized failures, thereby enhancing the overall resilience of applications.

With High Availability Architecture, if one component of the application fails, other components in different domains can continue to operate seamlessly, ensuring that the service remains available to users. This design allows for automatic failover capabilities, redundant systems, and load distribution, which collectively enhance application uptime and reliability.

While other choices also contribute to the operational stability of applications, they do so in different contexts. For example, Application Load Balancer enhances performance by distributing traffic, but it may not fully insulate applications from failures as High Availability Architecture does. Resource Monitoring Dashboard provides visibility into the health of resources but does not directly ensure reliability. Scaling Policies manage resource allocation based on demand, which improves performance and can indirectly influence reliability but is not a core factor for application resilience on its own.