Design for Six Sigma is a process for the conception and design of either new processes for multiple execution, one-off processes or new products. It was conceived to ensure that processes and products were capable of achieving the levels of quality that improvement projects were trying to attain. Usually a DFSS initiative starts when the current processes are not capable of yielding what the company strategically demands in terms of performance. When a process, line, machine, organisation, cannot meet the specified requirements, then technical or functional redesigns are needed. DFSS starts by capturing the VOC -Voice of the Customer- by identifying the customer’s requirements and by building them into the process.