Demandware provides e-commerce capabilities on a pay-for-usage basis requiring no investment in technology or specialized knowledge. The Demandware hosted service allows for customizations like free shipping over a certain purchase threshold and cross-product promotion based on items in the cart. Yes, Amazon does this but now you can too. These cross-sell links are generated in a drag and drop application interface so simple "even a French guy can do it".

Disclosure: the presenter was a French guy. We're not picking on French guys.