Amazon.com checkout process

Amazon Checkout Process. If you're going to be shipping tangible items to your customers, then take note of Amazon's use of Address Verification Service (AVS) service to both provide address correction, address enhancement (which can save on delivery time), as well as shipping time estimates.
AVS integration can improve your customer experience, reduce the number of returns from unavailable addresses, and also alert customers if they give a bad address (so you'll get more good addresses).
Note how Amazon keeps track of your payment details so you don't have to keep typing your full credit card every single time. Convenient.
The option of gift wrapping for many items is a nice bonus.