Web-based Direct-to-Consumer Marketplace for Small-Scale Fisheries Products: Rapid Application Development and Functional Evaluation in Jaring Halus Village, Langkat, Indonesia

Fishery and micro-enterprise products in Jaring Halus Village, Langkat Regency, Indonesia, are sold primarily within the village through face-to-face transactions and manual record keeping. This condition limits producers’ market reach to physically present consumers and provides no persistent transaction data for monitoring or business development. Previous studies on digital technology in small-scale fisheries have focused largely on catch recording and traceability, while applied marketplace development studies rarely describe their evaluation scope with sufficient precision to support replication. This study designs, develops, and functionally evaluates a web-based direct-to-consumer marketplace to address this gap. The system was developed using the Rapid Application Development model, with requirements elicited from fishers, sellers, and prospective buyers through interviews and observations, followed by public deployment. The marketplace integrates account management, product catalogue administration with stock and discount attributes, shopping cart and order management, delegated electronic payment settlement, and content management. Functional performance was evaluated using black-box testing across eight interface areas involving seventeen test cases. All test cases produced results consistent with their specified requirements. Partition analysis showed that eleven test cases exercised valid input classes, while six addressed invalid input classes. Four interface areas contained no invalid-input test cases, and the content-management module was not covered by the testing process. The study contributes a transferable reference architecture for direct-to-consumer fisheries marketplaces in low-connectivity rural environments, a traceable requirement-to-test structure, and prioritized recommendations based on identified testing gaps. The evidence is limited to functional conformance; therefore, usability, technology acceptance, user satisfaction, and economic outcomes were not measured and are not claimed. The findings provide a foundation for subsequent evaluation and iterative improvement of digital marketplaces for rural fishery micro-enterprises