Six sigma or design for six sigma?

Nowadays there is a wider acceptance, growth and investment of six sigma and design for six sigma (DFSS) in both manufacturing and service industries. Although initially employed to improve existing processes, six sigma principles are also applied to design and redesign processes to ensure achievement of high levels of quality. This effort is known as design for six sigma (DFSS). This paper tests the suitability of a multicriteria decision-making technique, the analytic hierarchy process, to make a choice between six sigma and DFSS in two multi-national companies.