People have to have list items for their yearly review cycle and their CV. "Replaced a legacy system with a more modern solution" can be presented in a light th

People have to have list items for their yearly review cycle and their CV. "Replaced a legacy system with a more modern solution" can be presented in a light that earns you cookies. But it may be seen as useless by the higher ups if all they care about is new features. You have to know what impresses your boss and your boss' boss or the interviewer at your next job.