The darkroom was the centre of analogue photography. In a darkroom were created the copies of a picture on photo paper, which had been planned when shooting with camera and film.
The “digital darkroom” is in a way the continuation of the darkroom from analogue times. Nowadays, the role of the film is taken over by the RAW image. The development of the film was linked to chemistry, intentional light and shadow effects and fine feeling. Each print was unique.
The “digital development” or postprocessing is non-destructive, repeatable and delivers a result, which at least theoretically can be printed as often as desired. In the digital workflow no print is unique anymore.