Having already introduced various extensions and modifications of the ADRC structure and its discrete-time variants for software-based implementation, we are ready to put it to work! To show how ADRC performs in actual applications, here we consider two laboratory testbeds representative of a spectrum of real control problems one can encounter in engineering practice. For those application examples, custom-made ADRC-based solutions are devised, designed, and deployed. We make an arbitrary choice to use the previously derived discrete-time state-space ADRC in the first example and its transfer function form for the implementation in the second example. For each of the considered cases, we will show similar steps including a brief plant description, formulation of the control problem, implementation and commissioning of the selected ADRC (based on already introduced “cooking recipes”), initial validation in simulation, and finally physical validation on target hardware. The examples will differ vastly regarding not only their dynamics but also the method chosen for plant modeling, covering both an experimentally driven approach and a case based on theoretical and numerical analyses.