Amazon will now allow users to check out using Venmo. The option will roll out to all users in the U.S. by Black Friday. The partnership with the Paypal-owned payment service will give Amazon shoppers more ways to pay at checkout. The move comes after other online retailers have added Venmo as a payment option, like Shopify and Lululemon. Amazon also recently added a buy-now-pay-later option to checkout as well.