The Amazon ecosystem depends on "prep centers;" here's how Montana became a hub for them

Prep centers have become an important part of Amazon's vast supply chain. Though not overseen by Amazon directly, prep centers work with Amazon's third-party sellers to get packages ready to be shipped to Amazon's warehouses. CNBC traveled to Roundup, Montana to explore why a number of these prep centers have popped up in the area.
Tue, Mar 31 202011:00 AM EST