The REWE Group is a German diversified retail and tourism co-operative group based in Cologne, Germany. The name REWE comes from Revisionsverband der Westkauf-Genossenschaften", meaning "Western Buying Co-operatives Auditing Association". The most important companies under the umbrella of the REWE Group operate under the REWE-Zentral AG and REWE-Zentralfinanz eG names. The basis of the co-operative trade group consists of a network of independent retailers. In the 2014 financial year, the REWE Group had total external sales of €51.1 billion. The REWE Group is the second largest supermarket chain in Germany behind EDEKA.