Usually, wind tunnels have a supervisory control system originally installed. However, just like subsystems, the supervisory control system will “age” as new requirements come up. For some time it might be possible to add functionality or to develop adjacent systems for certain tasks at rising cost. However, at some point it is just time to replace the system reaching its limits. Then, minimal downtime and minimal changes to subsystems to not involve all different (maybe even no longer available) suppliers is the goal. Thus, an ideal solution would be a modular and configurable system by a proven IT-integrator that it can adapt to the present subsystem interfaces and their behaviors. Simultaneously, the new system, shall avoids running into such obsolescence situations quickly again. Thus, it should offer a lot of configuration options and modularity to allow for future changes. We present a NoCode/LowCode-concept based on our platform WTCS, suitable for upgrades with minimal downtimes (actual parallel operation with the old system in many situations), and massive adaptability and future-readiness by modularity. From a self-installable base set, over customer-usable configuration editors for interfaces, test sequencer environment and ISO17025-compliant test management, to user-defined user interfaces, the system allows for various project situations from full-service projects to almost exclusive customer-executed implementation after corresponding training.