The continued growth of information technology has encouraged many service businesses to adopt digital systems in order to improve the quality of their services, including futsal court rental businesses. At Coy Futsal, reservations are still handled through messaging services or by customers visiting the venue directly. This condition can cause schedule recording mistakes, slow payment confirmation, and limited access to current information about court availability. This research focuses on designing and developing a web-based futsal court reservation application equipped with an online payment facility to make reservation activities more effective and efficient. The application development applies the Agile method using the Scrum approach, while system analysis and modeling use Unified Modeling Language (UML), consisting of Use Case, Activity, Sequence, and Class diagrams. PHP is used for application development, MySQL is used to manage the database, and Midtrans Payment Gateway is integrated to facilitate online payment transactions. Functional verification is carried out through Black Box Testing. The implementation results show that the application can simplify court reservations and online payments, display court schedules and availability in real time, and assist administrators in organizing reservation records, court information, and transaction reports. The system therefore provides support for improving service quality and streamlining operational activities at Coy Futsal.
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