Today, Amazon Payments, the company's PayPal competitor, has made its payments feature on third-party sites much more streamlined. Checkout by Amazon, which allows anyone with an Amazon.com account to make purchases on a third-party merchant’s site using their Amazon.com account credentials, don't have to leave the site to access their payment information and address book when completing a purchase. Previously, consumers had to leave a merchant's site after clicking the checkout button, and were redirected to Amazon if using Amazon Checkout. Now, consumers can access their Amazon address book and stored payment methods directly on a merchant’s site.