Over 72 holes of a golf tournament it is quite astounding how the last few strokes can be shaped by the hours and days spent before. A lost ball here, a penalty there, a long putt when it matters most; while these events can seem insignificant at the time, their impact on Sunday’s leaderboard can be substantial. E-commerce fulfillment is very similar. All of the automation, visibility, and supply chain management that goes into fulfilling an order ultimately depends on what happens during that last mile. While avoiding the water on 18 can be a challenge on the links, last mile delivery can pose a threat to a successful e-commerce supply chain. Here are a few challenges that remain for last mile delivery.