I guess the AHrefs case us a bit special... They need to run queries from their own IP address space and using IPs from a cloud provider would get them banned..

I guess the AHrefs case us a bit special... They need to run queries from their own IP address space and using IPs from a cloud provider would get them banned... The other option is to get their public iP space and have it announced by a cloud provider. So, in top of the VM pricing, there is some cloud and network engineering to do.