Single vs. Multisource Parcel Carrier Services

There is an age-old procurement debate over the merits of sourcing with a single supplier vs. multiple suppliers. In the world of parcel carrier services, which is best?

Those in favor of single sourcing — or limiting the number of suppliers for a particular service or commodity to as few as possible — believe there are enormous advantages gained, including reduced costs and improved efficiencies. There's less management, less complexity, and economies of scale are leveraged to get the best deal possible.