Supply Chain Management is the management of the links in a supply chain to maximize the orderly flow of materials and inventory of stock. It includes logistics, the timing of purchases, quality of supplies, and information on suppliers.

A supply chain is a series of linked stages in a supply network, along which flow goods and services in an orderly fashion.

SCM is the active management of supply chain activities to maximize customer value and achieve a sustainable competitive advantage.  Supply chain activities cover everything from product development, sourcing and production to logistics, as well as the information system needed to coordinate these activities.    [ https://cscmp.org ]