In order to be able to simulate a development system of a complex development environment, such as a test bench environment for motor, drive train, transmission, vehicle component, or vehicle development, utilizing an automation device and development tools in a continuous and reproducible manner, device models (7) generating development data (23) run in a simulation device (6), wherein the device models (7) at least partially process simulation data (24) from a test model (20), and a number of real development tools (5) are connected to an automation device (4) and/or to the simulation device (6) via real interfaces, and development tools (5) process the development data (23).