: Amazon’s original 1-Click patent was so influential that companies like Apple licensed it for the iTunes Store. Since the patent expired in 2017, "Buy Now" has become an industry standard, but Amazon remains its most effective practitioner.

: By utilizing saved payment methods and default shipping addresses, the button removes the "friction points" where a buyer might reconsider their purchase. This "express purchase" bypasses the shopping cart entirely, sending users directly to a final review or placing the order instantly. The Psychology of "Buy Now"

: It satisfies the immediate impulse to own a product, reducing the time between desire and acquisition.