At this point managing AWS, Azure or other cloud providers is as complicated or more complicated than managing your own but at an enormous cost multiplier and if you have steady traffic workloads I'm not sure it makes sense for most companies other than burning money. You still need to pay a sysadmin to manage the cloud and the complexity of the ecosystem is pretty brutal. Combine that with random changes in shit that causes problems like when we got locked out of our Azure account because they changed how part of their roles system works. I've also seen people not understanding the complexity of permissions etc and giving way to much access to people who should not have access.