Shopping cart data integration. In a blog post a couple of weeks ago I blogged about the integration nightmare before Christmas. The online shopping season is in full swing so I thought it would be interesting to look at how Amazon handles their Christmas order volume. Given that online sales are increasing all the time, integration and effective data handling is becoming a critical key component of the success of internet retailing. Here is an interesting statistic. Amazon at this time of year handles on average, in its UK operations, 35 orders a second off its web site. 35 orders a second! Its mind boggling, you don't do that volume manually or with poorly planned systems.