Integrating RAD and Design Thinking for Developing a Web-Based POS and Inventory Management System for MSMEs: A Case Study

Manual transaction and inventory recording in micro, small, and medium enterprises (MSMEs) often leads to recording errors and delayed decisions. This study developed a web-based point-of-sale (POS) and inventory management system for Fresh Market Klatak to streamline transactions and stock control. Development followed Rapid Application Development (RAD) and was integrated with Design Thinking to elicit user needs and iterate on prototypes rapidly. The system was evaluated using scenario-based functional testing and user acceptance testing (UAT). All functional test scenarios passed (100%). UAT with 16 users produced an overall acceptance score of 93% (Very Good), indicating the system is usable and meets operational requirements. Future work will develop a mobile application and integrate payment-gateway services to improve accessibility and transaction efficiency.