CVS also accepts alipay as a payment method, so they must have some kind of direct partnership. I don't see why they'd need an intermediary, although maybe they take the cash and just credit alipay some balance etc.
Hmm I have a couple Alibaba Cloud servers located in CN Hangzhou region and I just pay with my U.S. credit card, no Alipay needed. alibabacloud.com is meant for international customers anyway. I’m not sure if aliyun.com accepts international CCs, maybe you’re using that.
I also have at times ordered deliverables on Alibaba (not aliexpress). Being able to send funds in yuan over Ali network solves almost all problems with that.
I pay for 2 servers running in Asia under Alibaba, using my local CVS drugstore. Im in the Midwest USA. Not a single problem at all.