Value is determined strictly from the perspective of the customer. It relates to the specific product or service features the customer is willing to pay for. Organizations must seek to meet the optimal price for the customer while maximizing internal profits by eliminating unnecessary costs. 

The value stream encompasses the entire lifecycle of a product, from raw materials to final disposal. Mapping involves:

• Analyzing Resources: Identifying all materials and information required to produce a service or product.

• Identifying Waste: Distinguishing between value-added and non-value-added activities.

• Chain Alignment: Streamlining the combined efforts of engineers, designers, and manufacturers to remove anything that does not contribute to the final value.

Creating flow focuses on removing functional barriers and interruptions to improve lead times. A smooth, continuous flow ensures that production or service delivery occurs with minimal delay. This requires breaking down departmental silos and creating "Autonomous Production Units" (UAPs) or mini-factories that align accountability around the end-to-end generation of value. 

Unlike "push" systems based on unreliable sales forecasts, a "pull" system initiates work only when there is actual customer demand.

• JIT Delivery: Components are produced in exact quantities at the precise time they are needed.

• Kanban Signaling: Uses visual cues (cards or digital boards) to trigger supply actions from external vendors or internal warehouses.

• Reduced Inventory: By producing only what is deliverable, companies reduce excessive stock levels of raw, partly-finished, or finished materials.

The pursuit of perfection involves the continuous assessment and improvement of processes. Known as Kaizen, this principle requires a cultural shift where every employee—from frontline workers to executives—takes responsibility for identifying waste and implementing incremental changes. Success is measured through metrics such as cycle times, throughput, and cumulative flow.