UPS & Amazon
UPS is a major package delivery partner for Amazon, handling millions of Amazon packages per year despite Amazon's aggressive build-out of its own Amazon Logistics (AMZL) delivery network. Amazon's holiday season surges beyond AMZL's capacity, requiring UPS as an overflow carrier for volume Amazon cannot handle internally.
Why it matters: Amazon's AMZL network now handles over 70% of Amazon's own package volume, but UPS's hub-and-spoke air network provides inter-regional transfer capacity that Amazon's ground network cannot fully replicate. UPS's small parcel expertise complements AMZL.