This is not possible in cloud web hosting other than have not being chosen the proper kind of account
. That is because you could expand and reduce the volume of resources assigned to your websites quickly also, the limitation is really substantial. In case you observe that your present machine is going to be overloaded with web traffic, you could instantly install a few extra processing cores along with RAM and it is done, problem fixed. Obviously, you will have to spend more for that but when the traffic has got flattened, you are able to lessen the resources.