Recently, with the large-scale practical use of business rule systems and the interest of the Semantic Web community in rule languages, there is an increasing need for methods and tools supporting the development of rule-based systems. Existing methodologies fail to address the challenges posed by modern development processes in these areas, namely, the increasing number of end-user programmers and the increasing interest in iterative methods. To address these challenges, we propose and discuss

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... the adoption of agile methods for the development of rule-based systems. The main contribution of this paper is three development principles for and changes to the Extreme Programming development process to make it suitable for the development of rule-based systems.