Key dependencies

Successful Six Sigma implementation relies on a basic framework being in place:

• Six Sigma methods assume a leadership capability and team structure (sponsors, champions, process owners, green belts, black belts). If the leadership and roles are not in place the method is significantly weakened.
• Six Sigma assumes there is an agreed and well-understood top level down business process model known and in place. If this is not the case then the detailed process design work is done in isolation of the overall business model, which can be disastrous.
• Six Sigma assumes that the business, including IT, understand the purpose and mandate of the method and how it will integrate to other methods such as the system development life cycle, organization design methods and change management methods. This is often not the case, resulting in confusion and rework by analysts from these teams.