Over the past couple of decades, supply chain management has become a crucial concern for multinational firms. In our super-connected world, firms must maintain a handle on the way products, supplies and people are zipping around the planet. Companies that streamline the links between their suppliers, manufacturers, distributors and subsidiaries can realize a distinct advantage over rivals that have not yet caught on to the importance of high-functioning logistics and purchasing departments. Indeed, research has identified several aspects of supply chain management that can boost firms' bottom line.