Deploying Agile/Lean in the Organization- Use Design for Six Sigma
Use Design for Six Sigma:
The most important thing for an organization is business/stakeholder/customer satisfaction. I believe with Agile/Lean implementation you will be able to find new ways to keep the existing business/stakeholder/customers satisfied and bring in new business. The new designs and methodology should be adopted irrespective of the investment already made in the form of existing assets and processes to keep the customers happy. Faster to market (2-week iterations) better quality (iterative testing) face to face communications (ability to validate all the stakeholder's requirements) and usable software in every build (seeing is believing) will propel your Agile/Lean development project to a successful status.