Now that you have your web site, you need to track the activity and analyze how visitors are using it. Make sure to start with a free web statistics solution.
E-Commerce solutions offer the ability to manage and sell products or services online. These usually have the gateways already setup to support various payment methods like Paypal, and credit cards.
A CMS is a system that facilitates the management of content. These offer the ability to organize the content effectively and use modules to extend the functionality.
There are a number of backlogs represented in the agile process that all represent work required to enhance a product, but have slightly different context.