An apparatus, comprising a process control system of an orchestration system, wherein the orchestration system is configured to link a plurality of process modules to one another to obtain a combination of respective services of the process modules; a first process module; a second process module; wherein the first process module comprises a first process module interface for module ^communication with the process control system wherein the second process module comprises a second process module interface for module communication with the process control system; wherein the process control system comprises an orchestration GUI for process module orchestration, and a high level controller, wherein the high level controller is connected to the first process module interface and to the second process module interface via a field bus system; wherein a first interface description for the first process module is a standard nodule type package, MTP, file, wherein the first interface description comprises a specification of the first process module interface; the apparatus further comprising: a second interface description for the second process module being a MTP file having a process module logic entity associated therein, wherein the second interface description comprises a specification of the second process module interface; wherein the second interface description having the process module logic entity associated therein is importable into the orchestration GUI; wherein the process module logic entity is configured to derive a control code for the high level controller, the control code reflecting control logic of the second process module; wherein the first process module is configured to run control code for performing orchestrated services of the first process module directly on an internal controller of the first process module, and wherein communication, via the field bus system between the high-level controller and the first process module comprises an exchange of start/stop commands and a feedback of measurement values; and wherein the high level controller is configured to run the control code reflecting control logic of the second process module for performing orchestrated services of the second process module. a process control system of an orchestration system, wherein the orchestration system is configured to link a plurality of process modules to one another to obtain a combination of respective services of the process modules; a first process module; a second process module; wherein the first process module comprises a first process module interface for module ^communication with the process control system wherein the second process module comprises a second process module interface for module communication with the process control system; wherein the process control system comprises an orchestration GUI for process module orchestration, and a high level controller, wherein the high level controller is connected to the first process module interface and to the second process module interface via a field bus system; wherein a first interface description for the first process module is a standard nodule type package, MTP, file, wherein the first interface description comprises a specification of the first process module interface; the apparatus further comprising: a second interface description for the second process module being a MTP file having a process module logic entity associated therein, wherein the second interface description comprises a specification of the second process module interface; wherein the second interface description having the process module logic entity associated therein is importable into the orchestration GUI; wherein the process module logic entity is configured to derive a control code for the high level controller, the control code reflecting control logic of the second process module; wherein the first process module is configured to run control code for performing orchestrated services of the first process module directly on an internal controller of the first process module, and wherein communication, via the field bus system between the high-level controller and the first process module comprises an exchange of start/stop commands and a feedback of measurement values; and wherein the high level controller is configured to run the control code reflecting control logic of the second process module for performing orchestrated services of the second process module. a second interface description for the second process module being a MTP file having a process module logic entity associated therein, wherein the second interface description comprises a specification of the second process module interface; wherein the second interface description having the process module logic entity associated therein is importable into the orchestration GUI; wherein the process module logic entity is configured to derive a control code for the high level controller, the control code reflecting control logic of the second process module; wherein the first process module is configured to run control code for performing orchestrated services of the first process module directly on an internal controller of the first process module, and wherein communication, via the field bus system between the high-level controller and the first process module comprises an exchange of start/stop commands and a feedback of measurement values; and wherein the high level controller is configured to run the control code reflecting control logic of the second process module for performing orchestrated services of the second process module.