At the last job we deployed to thousands of nodes across AWS, Azure, and Aliyun. There was no unique needs across those environments, from a deploy perspective. There where some minor pain points from a config and monitor perspective. There where massive pain points from a infra management perspective. Our SREs knew AWS inside and out but struggled with Azure and Aliyun documentation and support. We had to build out API middleware, so existing could could seamlessly operate in all 3 environments. That's not set it and forget it. Keeping everything consistent across 3 cloud APIs requires constant care and feeding.
