Odoobot allows you to add any server from any cloud provider such as Google Cloud Platform, Amazon Web Services, Azure, Contabo, Hetzner and more.
Some cloud providers will provision your server with username / password authentication, such as Contabo and Hetzner, here is how to connect your server
Other high-end cloud providers such as Amazon, Google, Oracle and Microsfot provides compute instances that allows access using Private Key authentication, here is how to add your server using private key authentication