A long-term relationship between purchaser and supplier is necessary for best economy.
—W. Edwards Deming 
Lean-Agile organizations deliver value to their Customers in the shortest possible lead time and with the highest possible quality. Wherever applicable, they engage Suppliers to develop and deliver components and subsystems that help them achieve their mission. Suppliers possess unique and distinctively competent skills and Solutions and are experts in their technology; they can provide a high leverage point for fast and economical delivery. Suppliers therefore participate in most Value Streams, and value delivery is ...