Marketing is not a function by itself or a task for just one person its success depends on several activities in the marketing value chain. Understanding this value chain is important for companies to stay relevant, and crucial for seeing a return on their investment in marketing. Companies employ and interact with many members of the marketing value chain, and therefore need to be familiar with the relationships between each link in this chain. Marketing Value Chain is about understanding this value chain, where marketing fits into the chain, and what role marketers play within it.