Let's take the example of an online shop, where you want to introduce a new discount or display rule. With KRules you can use English to determine that all buyers from zip code X or city Y will get a 10% discount on product Z, or if any customer buys a Nokia phone, offer him/her Nokia accessories.
The kit includes both ColdFusion and JSP custom tags, as well as PHP code that allows you to use these languages as the server side level of the architecture. In addition, this document describes what is necessary in order to use other middleware languages such as ASP and Perl as the server side part of this architecture.