A PETRI NET-BASED APPROACH TO EXTRACTING AND VALIDATING REQUIREMENTS FOR MODELLING AND MODERNIZING ARCHAIC IT SYSTEMS
Archaic IT systems are critical to the functioning of many organizations but present significant challenges for modernization due to their inherent complexity, outdated technologies, and lack of adequate documentation. Extracting and understanding the workflows and embedded requirements within such systems is essential for adapting them to contemporary infrastructure while maintaining regulatory compliance and operational integrity. This article explores the use of Petri Nets as a formal and graphical modelling tool to address these challenges.