A computer-implemented method for simulating performance of a wide area application service (WAAS) comprises receiving network traffic statistics and properties associated with operation of a first network comprising a first number of virtual client machines and corresponding virtual server machines. The method may also comprise establishing a second virtual network comprising a second number of virtual client machines and corresponding virtual server machines, the second number being greater than the first number. The method may also comprise simulating performance of the second virtual network based on the network traffic properties associated with operation of the first virtual network.