Role of supply chain manager

What is the role of a supply chain manager? This very question irked me in the evening while having tea. I mustered my thoughts to make this picture: a supply chain manager acting as a rope and being pulled from one end by customer’s mounting demands and the opposite end by the company’s growth and profitability. His task is to prevent the rope from being snapped and achieve profitable growth by treating supply chain management as a strategic variable of company’s long term planning.
From the little experience of the class room listening, I can say that the manager must see supply chain as a holistic or as a whole—all the links involved in managing the flow of products, services, and information from their suppliers' suppliers to their customers' customers, here I mean channel customers, such as distributors and retailers. He must pursue tangible outcomes—focused on revenue growth, asset utilization, and cost. Of course achieving profitability is one of the major goals which can be made possible by keeping costs as low as possible, though goal of customer service should not be compromised.
As we know that traditionally companies and their component parts were seen as distinct functional entities, but today the view has changed entirely; component departments are seen as parts of an integrated supply chain and the measure of success depends upon how well all the activities are interconnected and coordinating well across the supply chain to deliver the promise of value to the end consumer, simultaneously more precisely making profits out of every chain that exist in the supply chain network.
Thus a supply chain manager’s role becomes more so important since his ability to visualize supply chain as a web where every link has its own importance in the success of supply chain, and coordinating while sustaining profits from a single link, is what makes sense for the company to hire him.