How did changes in the structure and function of concentration camps impact the eventual extermination camps?

Initially the concentration camps served as a place where people where held and these people have or had no right to a legal counsel to have their case sorted out in court until they are taken elsewhere. These camps were established all over Germany. It got to a point that the administration of those camps became regulated After the second world war, these were expanded and when the capacity could not hold the number of people coming in (because the inmates were as Jews, gypsies, and criminals) who were enemies of the government; extermination began to give way for new inmates .