We’ve been writing a lot lately about the new level of intimacy required to compete in today’s supply chains. The supply chain “Titans,” as consultant Jim Tompkins likes to call Amazon and Walmart, are responsible for stirring up both angst and creativity among competitors. The introduction of Amazon Flex, the e-commerce model we wrote about recently, now has brick-and-mortar distributors contemplating the idea of taking up residence inside their customers’ distribution centers to better differentiate themselves as service providers.