A control system in industrial automation technology includes hardware having at least one processor and at least one storage device, in which applications to be executed by the control system are stored. The control system is configured such that at least two and preferably a plurality of mutually isolated execution environments are provided and/or configured. At least two, and preferably a plurality, of independently executable and/or operating functional modules are included, each of which can be executed and/or operate, in particular exclusively, in an isolated execution environment. The functional modules are characteristic of functions of the control system.