Buy Now Pay Later is a way for customers to buy a product through installments instead over a period of time (i.e.  4 installments every two weeks). If you want to buy an expensive item such as a grill or mattress then it might be less of a burden for you to spend that money all at once.

Note: What is Buy Now Pay Later (BNPL)?

There are many platforms offering this such as Klarna, PayPal, and Sezzle to name a few. But now Apple is getting into the mix as it plans to integrate its own BNPL option into Apple Pay.