对于BMC更新来说，基本镜像本身不需要做修改，只要把DOS关机程序拷贝到镜像。
For the BMC update, no modifications are required to the base image itself, except to copy a DOS power-off program into the image.
应用程序和一般用户不需要做任何修改，会自动地路由到正确的位置和应用服务器。
The applications and regular users do not need to make any changes and are automatically rerouted to the correct location and application server.
作为迁移的一部分，应用程序代码可能不需要做重大的修改。
It is likely that significant change will not be required in your application code as part of your migration.
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