Hi @培美 宋
I am not particularly familiar with huawei cloud and Alibaba Cloud. I found this link for you: https://support.huaweicloud.com/intl/en-us/usermanual-rds/rds_sqlserver_05_0001_03.html, which provides an overview of huawei cloud migration solutions, maybe you can use it as a reference.
For more detailed information, I suggest you go to other cloud platforms for help.
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Best regards,
Aniya