UPS's pivot from Amazon, its largest customer, points to greater profitability.

While the carrier's relationship with Amazon isn't over, UPS aims to grow in more lucrative parts of the parcel market as it slims down its network, executives said.

UPS isn’t as interested in the e-commerce deliveries that used to be its bread and butter. “There’s just not a lot of margin in delivering T-shirts to houses,” Chief Financial Officer Brian Dykes told ...