Updated on 2025-05-22 GMT+08:00

RES10-02 Deploying Application Systems in Multiple Locations

An application system can be deployed at multiple locations to prevent system unavailability due to infrastructure faults at one location.

  • Risk level

    High

  • Key strategies
    • Deploy the data and resources of an application system in multiple AZs to prevent service interruptions caused by faults in a single AZ.
    • Deploy an application system that has high availability requirements in multiple regions to prevent service interruptions caused by faults in a single region.
    • If a multi-AZ architecture can meet application availability requirements, multi-region deployment is not required.