Lean has two primary emphases: Achieve fast-flexible-flow and discover what is needed. These principles work together to remove delays and to minimize the amount of work in process. When Work-in-Process (WIP) is high, the team will thrash and there is a risk of greater waste if directions have to change. Lean-Agile Involves a commitment to continuous improvement and oversight of the flow of value. Here are some basic Lean principles: