To bring higher availability to applications running on Alibaba Cloud, businesses may seek a high availability solution that greatly increases the resilience of their applications without causing major cost increase.

This solution allows you to run your application over a cross-zone deployment to achieve failover capabilities within a region. If failures occur in one zone, your application can continue to run as normal by using the infrastructure deployed in the other zones. This solution provides high availability based on zonal redundancy with only minor cost increase, and makes your application more resilient against single-zone failures.