The 7 Key Elements of the Web site (7C’s)-Commerce

Commerce is a transactional capacity of a site. It is for online transactional function.
Registration-It allows a site to store credit card information, shipping address, and preferences.

One-click Shopping-Amazon.com-Uses a patented featured that allows users to order products with a single click. Delivery default settings are applied automatically.
Shopping Cart-User can place items into their personal virtual shopping cart. The selected items can be purchased immediately or stored and purchased when the user returns on another visit.
Order Tracking-Users are given the ability to check the delivery status of the products they are ordered.
Delivery Option-Users are presented with a choice of option to specify their desired speed and cost of delivery. For example: two-day shipping.

Security-Amazon attempts to guarantee security of transactions and related data through encryption and authentication technologies.
Credit card approval-Amazon has the ability to receive instant credit approval for credit card purchases through electronic links to credit card clearance houses.