As you may already know there are fundamentally five (5) key steps in the Lean transformation of a process. These are traditionally uniform across many Lean experts with only minor tactical variations resulting from customization in unique product or service delivery. These include:
Lead Execution Roadmap
1. Specify value
2. Identify the value stream
3. Establish flow
4. Pull from the Customer
5. Continuously improve to perfection
While all steps are critical to the Lean solution, I believe that the Value Stream identification has a profound impact on the understanding the current state and defining the future state. Simply put the Value Stream Map (VSM) makes the process real by its visual construction.
Through the VSM the following is achieved:
- All process or service actions, both value-creating and wasteful actions are mapped;
- Fundamentally, it is a focused end-to-end view of the process, showing what is upstream to the process and what is downstream to the process;
- As such, the VSM is a closed loop of the Customer demand and the associated response by the business process to meet the demand…good (value added) and bad (non-value added);
- The VSM highlights key performance metrics (volumes, FTE’s, throughputs), delays and even Quality metrics…anything that provides a numeric perspective of how the process executes;
- Ancillary information is also shared, such as market share, demand streams, process breaks, etc…
The development of a real and an effective VSM takes practice, but with a little help most process owners can visually map key elements of their day-in day-out process as the first step. I would recommend that those truly interested in improving not only their understanding of a process chart a VSM on paper. To develop robust VSM’s, read the working text by Mike Rother & John Shook titled “Learning to See”. This is an excellent step by step instruction manual on how to create VSM’s. Here is a sample VSM that pictorially provides a summary of a process:


