<![CDATA[This study aims to develop a sales and purchasing information system using the Agile development method to overcome the problems of manual transaction recording that cause data inaccuracy and business process irregularities. The scientific contribution of this study is the successful application of the Agile method, which has resulted in a system with full automation and integration of the sales-purchasing process and a very high level of user acceptance. The Agile method was chosen because it allows for more flexible application development that is responsive to user needs. The application was tested using black-box testing and passed 100% of all functionality tests according to specifications. Usability testing through questionnaires resulted in a Grand Mean of 4.727 (scale of 5), indicating a “very good” rating from respondents, especially in terms of ease of use and calculation accuracy. These results confirm that the developed system not only solves practical problems but also contributes scientifically through the implementation of the Agile method, which has proven successful in the case of business process automation and integration.]]>
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