The realization of the European Higher Education Area (EHEA) is a common aim of 46 countries in Europe. The effort is usually named as the Bologna Process, after the Bologna Declaration of June 1999. Its main objective is providing the European Universities with the tools for promoting citizens and knowledge mobility, breaking the obstacles caused by historical diversity among the European higher education area systems. A central objective is the adoption of easily readable and comparable degrees, in a scheme based on two main cycles, undergraduate and graduate. Uniformity is favored by the establishment of a common system of credits, to encourage mobility among the European countries. European cooperation is also endorsed for quality assurance with a view to developing comparable criteria and methodologies.