Supply Chain : ~ A supply chain is a system of organizations, people, activities, information, and resources involved in moving a product or service from supplier to customer. Supply chain activities transform natural resources, raw materials, and components into a finished product that is delivered to the end customer. In sophisticated supply chain systems, used products may re-enter the supply chain at any point where residual value is recyclable. Supply chains link value chains
Demand : ~ Analyzing the firm's activities as a linked chain is a tried and tested way of revealing value creation opportunities. The business economist Michael Porter of Harvard Business School pioneered this value chain approach: "the value chain dis-aggregates the firm into its strategically relevant activities in order to understand the costs and existing potential sources of differentiation". It is the micro mechanism at the level of the firm that equalizes supply and demand at the macro market level.
Early applications in distribution, manufacturing and purchasing collectively gave rise to a subject known as the supply chain. Old supply chains have been transformed into faster, cheaper and more reliable modern supply chains as a result of investment in information technology, cost-analysis and process-analysis.
Marketing, sales and service are the other half of the value-chain, which collectively drive and sustain demand, and are known as the Demand Chain. Progress in transforming the demand side of business is behind the supply side, but there is growing interest today in transforming demand chains.
The meaning of Supply Chain Management is the process of managing the materials, organizations, and methods which are engaged in developing and providing products or services. It main focus is to boost the flow.