Buy now, pay later (BNPL) installment loan provider Sezzle will offer its interest-free product to Discover merchants in the U.S., with an emphasis on the largest, about 300 enterprises that have direct connections to the Discover Global Network (DGN). Sezzle began signing merchants in 2017 and has just become available to consumers as a payment option from 29,200 small and midsize merchants. Over 90% of those merchants are in the U.S., including thousands at online marketplaces. However, enterprise-sized merchants are a challenge to Sezzle and all other BNPL providers. Negotiating a con...