It’s a scene straight out of The Jetsons: drones delivering packages right to your doorstep, cutting out inconvenient delivery time and costs. But what once seemed futuristic now seems inevitable: retail giants such as Amazon and Walmart are currently experimenting with drones, and many people have big questions about the technology’s role in the supply chain. Among them: how would drone delivery work? Why is it necessary? And finally, when can we expect this future to become reality?