The Nazis needed an official plan to get rid of the Jewish people in Europe, and their response is known as "The Final Solution." The Final Solution wasn't made official until the 1942 Wannsee Conference, but Reinhard Heydrich had been coming up with the thought of the Final Solution before the conference. Shortly after the conference Nazis began deporting Jews from all over Europe to extermination camps that were all located inside Poland territory. This was the main goal for the Nazis to accomplish in order to have all the Jews die. Known to the Nazis as Operation Reinhard, the plan began with setting up three killing centers in Poland, Belzec, Sobibor, and Treblinka. Majdanek, Chelmno, and Auschwitz II (Auschwitz-Birkenau) were then added as killing centers. Two-thirds of the European population of Jews were killed during this time. The genocide, or mass destruction, of the Jews was the end result of a decade of increasingly severe discriminatory measures, meaning "The Limited Solution" and "The Situational Solution."
http://www.jewishfilm.org/Catalogue/films/wannseeconference.htm