The Five Steps of Lean
Step 1: Specify Value
Define value from the perspective of the final customer.
Express value in terms of a specific product / services, which meets the customer's needs at a specific price and at a specific time.
Step 2: Map
Identify the value stream, the set of all specific actions required to bring a specific product through the three critical management tasks of any logistics, supply chain or warehouse: the problem-solving task, the information management task, and the physical transformation task.
Create a map of the Current State (As-Is or Road Map) and the Future State (To-Be) of the value stream.
Identify and categorise waste in the Current State and eliminate it!
Step 3: Flow
Make the remaining steps in the value stream flow.
Eliminate functional barriers and develop a product-focused organisation that dramatically improves lead-time.
Step 4: Pull
Let the customer pull products as needed, eliminating the need for a sales forecast.
Step 5: Perfection
There is no end to the process of reducing effort, time, space, cost, and mistakes.
Return to the first step and begin the next lean transformation, offering a product and service which is ever more nearly what the customer wants.